At 5000 miles, I added the Pulsar LT to my 2020 Trail Boss with the 6.2 engine. My engine runs on all 8 cylinders, all the time. No more dynamic fuel management cr@p, and I do not have to disengage the stop/start feature anymore. The truck has been perfect. Now have 32,100 miles on the odo. Change the oil every 5,000 miles with Mobile 1 full synthetic. I also put a oil catch can on. I run 93 oct fuel too. Great truck.
@@mikeswan1970 I purchased the catch can over 3 years ago, so I am not sure where I got it. I did get one for my 2021 Camaro SS 1LE on Amazon. The kits come with all the hoses, clamps etc.
@@spankthemonkey3437 I just traded my truck in last month. Had 34,412 miles. Not one issue. I wanted the new 2024 Chevy 2500 ZR2, but ended up getting a new 2023 Ram 2500 Power Wagon. The Chevy was almost 20K more after Ram discount. My Trail Boss was good to me, and I will never knock a Chevy Truck. I also own a 2021 Camaro SS 1LE, so I am still with Chevy.
I had an 18 Silverado with the 5.3. I had a handheld tuner I put on there. With the cylinder deactivation I was getting 18 mpg. With the tune and v8 all the time I was getting 21-22 regularly. They can absolutely optimize these motors and surpass the current mpg they get. It’s government bs making them do this.
It's not about fuel economy well it's suppose to improve it but it's not the main reason for it it's the epa they have to much power so they can just bully car manufacturers
My Yukon Denali 6.2L 2022 with 93.000 KLM Lifter Failure Oil use : 0W20 Fuel : 95 City Drive 90% Now its in dealer to replace lifters So , i will stay with this DFM Crap System till Complete 100.000 KLM(End of warranty) and i will Remove DFM with tuning ECU. Great Video .. Thanks 🙏🏼
Ok buddy you have stockholm syndrome....there's 1,000 videos of them blowing up at 60k. Edit and he just stated in the video massive amout of lifter failure plaguing this truck.
130k mikes and 4k hrs later still running strong with zero issues!! Had the pulsar LT since i got the truck new in 2019, gm cold air and gibson catback exhaust and it rips!
Adding a catch can in the PCV line . It reduces the amount of lube oil making its way into the backs of the intake valves . Less boot oul on the back of the intake valves is less carbon .
If u drive with a light foot and the speed limit the 6.2 will get great fuel milage. After driving 1000 miles, 90 percent highway I have averages 21.5 mpg.
Can confirm. Was getting similar mileage on my 2022 Sierra 1500 Limited with the 6.2 until I installed my BDS 4” lift kit. MPG took a hit as I knew it would, but I also think the weather played a part in it because the temps started dropping where I live soon after that. Hoping to regain some of that mileage when the temps go up.
I have a 2019 GMC with the 12,200lb. tow package. First think I do after starting is turn off the auto stop and then put it in sport mode. With the cruise set at 75 to 79 mph I can hit 23.9 mpg. I try to use no ethanol premium as much as possible. Oh, I was a Ford man for 53 years. No more Fords for me.
I've ran 87 since I bought mine, no pinging. I also run in L9 all the time, disables DFM, basically the same MPG. Also no injector squeaking. 20k in, 16.6mpg average.
You can have it retuned and have the cylinder deactivation cut off and you don’t have to worry about it. I know several people that have done it and has over 150-200k miles and one with almost 300k with original lifters. Most shops do it when they have to rebuild and replace them.
You’re absolutely correct about running 93 octane fuel/premium gasoline, I own a 2020 AT4 and now there’s a sticker on the gas door that states use premium gasoline only
We got trapped on the top of a mountain in a snow storm the first year i owned my at4 in 2020. High winds that were blowing semis over. We had my 1 year old. We had to spend more than a day waiting for the storm to pass. The cylinder deactivation let us have over 48 hours of fuel on like 60% of a tank. It burn fuel at like a 1/3 of normal Idling while keeping us warm. Thank for for it. We were in real danger. A great technology..
Great video! I've owned my 2015 denali 6.2 since new, I enjoy driving it today just as much as the day I picked it up! ( I also have been running 94 ocatane since day one, 94 octane is just the highest available at the station I fill up at.
I have the same truck, but its a 2021 AT4 with the 6.2 and is white. I get 22-23 mpg on the highway, about 12-15 in town. 21k miles on it and it runs great.
I own a 17 HC with the 6.2L, it's been a great engine so far, knock on wood. I've done the catch can, not sure what good it does, but it catches alot of crap. Been using Amsoil Signature and filter since new. As for MPG it averages between 10 to 12L/100kms, but I drive it easy. It's been tuned with Trifecta and had the AFM shut off from new, again, not sure if this helps. It's an overall fun truck to drive, especially in sport mode on the tune, it picks up insanely fast in this mode. The only down side is the 8 speed, it clunks and bangs into gear sometimes, as I'm sure your aware, but it does shift great and smooth with the tune. My next is a Duramax, you sold me on this. Great videos, your a pleasure to listen to with your knowledge. Cheers from Sydney
Catch can helps to keep a lot of the oil from the intake which is what causes a lot of that carbon build up so it's a great thing to have. And having that AFM shut off is a great thing. It does seem like the pre 2019 were much less likely to have lifter failures which is a good thing for you. But I can only image putting a tune on one of these engines does, probably a pretty fun quick truck!
My 15 6.2L had 3 lifter failures in 35k kms.....attributed to afm Along with horrible 8 speed and highway vibes it truly was a POS. If I ever buy another GM it would be the 3L diesel.
My daughter and son in law have the 6.2 engine and they are broken down waiting on a new engine. They are on the third engine now and waiting behind 9 other trucks at the dealership with the same problem. These motors are shit. Don't buy them.
I have a brand new 2023 GMC AT4 and the way to stop that cylinder deactivation system is to put your truck in manual and put it and ninth gear and leave it like that and when you get on the highway, you can put it in 10. And the only issue I’ve have had with this truck out of 32,000 miles. Is the parking break system like there were something they had to replace
My 2016 5.3 with AFM had zero issues in the 62K miles I owned it. My 2019 6.2 has had zero issues so far and it's got almost 42k miles on it. I only run premium fuel in it and I only use Mobil 1 0W-20 oil and Mobil 1 oil filters. I've never gotten anywhere near 12 mpg. In mostly city driving I get 16-17 mpg. My best highway mileage was 25.9 mpg over a distance of 390.7 miles, which was confirmed with a hand calculation. And I have the max trailering package with the 3.42 rear end. The truck is totally stock and there have been no programming modules used. It was built in July 2019 in the Mexican plant and I bought it brand new in September 2019.
I've had similar experience. I bought three at the same time in 2019 for work. 2 were 5.3L's and mine was a 6.2L. I consistently get 18-20 mpg with a best of over 24 mpg in the 6.2L and have had ZERO issues. The 5.3L consistently get 15-17 mpg. One of the 5.3L has already had a new engine and now needs injectors (over 200K miles already). Again, ZERO issues with the 6.2L. I run premium fuel only, but will also tow my 9,000+ lb travel trailer over 400 miles on weekends ( I have max towing package and airbags) and have over 104K miles on it currently.
It is statistic after all. Just like typical GM 2.4L Ecotec car engine has timing chain fails ~70k miles. In our families, two same engines did that in 65 k miles. No more GM product for us.
Have a 2015 high country with 6.2 102k miles average 19 plus mixed driving summer the worst I've seen is when Temps drop to zero or below and im still 16.5 mpg that's with hauling over 500lbs of tools that are always on board..highly recommend the 6.2
My 1988 Chevy P22 step van is Air Force surplus with the Detroit Diesel 6.2, TM400 3-speed AT, simple naturally aspirated. I used it from 1994 to 2006 as a church organ service van then as a toy truck until now. I replaced a worn out ring gear and the poorly designed starter that caused it with this little geared starter from Japan from an elderly auto electric tech. After 25 years the auto glow plug gadget died and I upgraded it to a manual 300A starter relay to preheat it. It has 98000 miles and with a new vacuum pump shifts so smoothly you barely feel it. 3000 mile oil changes with Shell Rotella T4 to clean up diesel blowby and it uses no oil. 6.2 is a great engine in my $2000 truck...
Somebody please bring this gentleman : - a Nissan TITAN or ARMADA with the 5.6 V8 - a Ford F150 with the basic 3.3 V6 - a Nissan Frontier 2.3 bi-Turbo diesel - a Mercedes G-320 CDI - a Kouign-amann Alex I can't wait to hear you compare this 6.2 to the 5.3 V8 👌
I have 6.2 in my suburban. I've been using the gm oil dexos only and spraying the intakes now and then. Also amsoil fuel cleaner and i'm using 93 only. it is powerful especially with the 10 speed I hope it runs good for a long time
93 octane with that compression is a must imo. I'd like to open up the chamber/piston reliefs, delete the direct injection/VVT/DFM/HP pump and put a LS7 intake on it for port injection.
One thing i can clarify, my 23 yukon Denali came with the DFM turned off. It is running strong with 76000 kilometers. I think cars from 22 are having the DFM turned off from factory which i think is a very good achievement.
My 2020 6.2L AT4 runs on signature series 0w-20 Amsoil and fuel additives PI and upper cylinder cleaner. No issues and runs awesome with borla atak cat back with S&B CAI 🇺🇸🇺🇸🇺🇸 Dodge the father and RAM the daughter
I've got a 2016 Chevy 6.2 8 speed. Bought it new with 6 miles on the odometer. Still have the AFM lifters in it. But did tune out the AFM with less than 15,000 miles on the truck. At 88,000, installed a edelbrock 2.3 liter supercharger. At 125,000 miles, started having some minor transmission issues. Slipping from time to time, hard downshifts, etc. Just replaced the transmission myself at 181,386 miles with a GM reman. Total cost for me installing the reman GM transmission that came with new torque converter and fluid was about $3,600-$3,700. Now feels like I'm driving a new truck again. Average 16 mpg alltogether. Only lost 1mpg with the addition of the supercharger. It used to average 17 mpg alltogether driving.
@nickfountain8420 ,the trans with my son truck was the fluid being wrong from factory, had torque shuutter.changed fluid and put new torque converter in and fixed problem.the tune on the trans is golden on my sons., Sounds like you got that truck right and it must be a blast to drive.
My 2022 5.3 is the same. No DFM because of chip shortage. So all the guts are the same, but truck never deactivates cylinders. Time will tell if this makes a difference I did read on a forum with some GM Techs saying most of the lifter failures they see are all trucks that run the recommended oil change internal. I plan on changing my oil at the 50% mark so we’ll see if that makes a difference. Only 25000km on my truck so to early to tell
I've had the LT1 in my Corvette and LT4 in my Camaro and they were awesome engines. When it came to the truck, the mileage just wasn't there so went with the 3L Duramax.
Thanks for the great video review!! Any new thoughts about the 2024 6.2L V8 engine that still has the Dynamic Fuel Management technology? Muchas Gracias!!
6.6L L8T (2500/3500HD): More of an old school GM push rod V8. But with many Gen5 updates. 1. Runs great on 87 octane (10.8:1 compression). 2. No DFM 3. Iron Block 4. Forged crank
I have a 2014 Denali half ton with the 6.2L bought it 2 years old and 66,000km on it and I still run it with 235,000km. I have haven’t done shit to it. It’s a fucking BEAUTY.!!!!! Now I just got a 2023 AT4 half ton and it’s sweet. Love the 6.2L. ❤
For 2024, the owner manual required 91 octane… I’m from Quebec and the only gas available at 93 octane range is Petro-Canada 94. But Petro-Canada is not top tier fuel(like manual recommand). The only top tier gas brand in Quebec is Shell
HP Tuners is making good progress on GM's Global B ECM's; they have the L5P and the LT2 in the C8 able to be unlocked now. The 6.2L L87 is very similar to the LT2 in the C8 Corvette, and I believe it (L87) was the same long-block as the LT1, so these are not bad engines. Lot's Camaro and C7 Corvette running LT1's. AFM/DFM has always been about GM and never about the owner that makes the whole circle of life happen for the automakers. GM needs higher corporate average fuel economy (CAFE) ratings or they get dinged and pay subsidies/penalties to the government. This is why FCA is finally getting out of all their Hemi V8's; (they can't afford the penalties any longer.) While it would be awesome if you could get an L87 without DFM and just get regular LS/LT lifters, once your particular L87 vehicle is able to be tuned, you can do a delete and replace them all with very durable aftermarket lifters. I prefer the Johnson 2110's that GM puts in their COPO Camaro's. That said, while I have heard of a couple C8's needing new lifters, this seemed like it was more 2020/21 vehicles but who outside of GM knows for sure? Likely supplier QC issues during COVID, and less the actual design. The other beauty of these engines is in their relatively simple design. One camshaft, two-valves per cylinder. There are tons of aftermarket performance parts available for these LS/LT motors. I live a few miles away from Texas Speed and Performance and the LS/LT motors are their bread and butter. Pulling the heads is not a horrible job for those that know what they are doing. Get them ported and polished and beef up the valve springs while you're in there. I think everyone can agree that it's probably the most mod-friendly engine family in existence, no other engine family in GM or any other automaker has the following and aftermarket support that the GM LS/LT motors do. I have always been skeptical of the oil requirement for the 6.2 in the truck versus the Corvette. GM is adamant about 0w-20 in the trucks and they went from 5w-30 to a 0w-40 for the 6.2 in the C8 Corvette. I have come to the opinion that this is probably in large part just due to the way the motor runs in the truck versus the C8 or Camaro. My L87 doesn't go through the revs like the LT2 in my C8; I rarely even get it up to 4k at it's peak torque curve, especially with the 10 speed transmission. But as you said, if you put your foot in it, the truck just goes. This is a small-block V8 that has the torque of a big-block with the power levels of a modern V8., it's the best of both worlds. I wouldn't let the DFM/lifters scare you away from buying one of these vehicles, it has warranty for 5yrs/60k miles (should still be 100k miles but whatever, GM,) and once you get past that, you should have the ability to tune your L87 vehicle and either turn off electronically the DFM or preferably, physical remove the DFM lifters and disable it in the ECM. I might be tempted to swap my Silverado ZR2 6.2L for a new MY24 Silverado ZR2 LZ0 Duramax, but the 6.2L V8 probably has less overall maintenance given that you don't have a turbo or any of the diesel after treatment equipment. While I am sure as you mentioned in your review about the LZ0, that it sounds great (sort of like the straight 6 Cummins diesel in their 2500 trucks,) you won't ever get quite the NASCAR grumble and sounds that you can get out of a good exhaust on a GM 6.2L V8; (I prefer AWE for both the C8 and my ZR2 truck.)
People have gotten quotes to remove the DFM components and replace them with regular stuff and the quotes around around $6k... and thats not including to tune needed. Its ridiculous.
Disabling DFM electronically isn't enough. Removing the lifters is also not enough as you need to replace the cam with it. Where GM screwed up the 2nd most (After the crappy lifters), is their huge VVT cam gear... You have to drop the oil pan (which sucks on a 4wd model), remove the oil pump, remove the chain, and then replace the cam to a non-DOD cam because of the lack of space to just pull the cam gear like on older LS engines. Alternatively, you can pry the chain off the cam gear one link at a time (which is a pain in the ass for removal and installation)... but it's BS that this even needs to be done just to cam swap.
Last truck’19 I got 17.8 mpg driving it nicely over the 3 years I owned it. Occasionally towing Ran 87 octane because stupidly I never knew better. If you race it around obvious mileage decreases
The higher octane recommendation is altitude dependent. On older, high compression V-8's, I would observe pinging (knock) under load at sea level, but not at altitude, where the air can be ~15% less dense. The newer engines address knock by retarding the timing. Some do so in 2 degree increments, up to ~10+ degrees. Retarding the timing can dramatically reduce horsepower and fuel economy. It would be very useful if the engine WARNED the driver when its sensors detected knocking and elected to retard timing. The driver could then learn what octane they needed based on their load, air temperature, and altitude, and accordingly decide which fuel is best.
@user-hw9lm1lf9n Do F-150 owners with the 3.5 ecoboost do that? Ford tells them they should in the owners manual, but the vast majority don't. This 6.2 has knock sensors and a cam phaser for a reason. The 6.2 is 93 recommended but only recommended. Just like truck siwth the 3.5 Ecoboost. And soon the Hurricane I6 Rams.
This is the kind of GM engineering that keeps Flat Rate mechanics busy and well employed . As a Retired GM tech after 47 years , I can say I worked on a lot of different Engines . My top pick engines are the 2006 LS1 4.8-5.3-6.0 , and stock older 350 -350 hp engines . Today's trucks are way over engineered for what there are used for .1975-2022.
I have(had) this engine in my 2019 silverado, it cost me 2 engine(1 on warranty before 2000KM) due to AFM(active fuel management) module lifter failure and the other at 61 000KM, less than 5 month after 5 years warranty expire. I had to bring it back to exchange it for 3500HD(gas) 6.6 and a 125 000$ bill....less my equity of course. GM knowns about this, there is class action lawsuit coming on them from Michigan.
If the cylinder is not getting compression how is the oil ring manage oil ?Lexus 5.0 litre engine in the LC 500 has both direct and ported injection and it’s a master of an engine
I wonder what the MPG would be without the fuel management tech in place? I would presume that even if its 0.3mpg better with the DFM then that is enough of a difference across GMs entire fleet to allow it to hit certain regulatory requirements?
As an owner of a 23 yukon denali. My 6.2 had its DFM turned off from factory. I have noticed that there is no major difference in the fuel economy. With DFM it would be around 21mpg city and without DFM it can come to around 20mpg.
From what I understand according to another channel the problems with the AFM/DFM are less than 1% of the trucks made with it. Not sure how accurate that is. That being said I turned mine off after it started pumping oil into the four of my cylinders when they were on in V-8 mode and was burning oil and misfiring. I turned it off at 86,000 miles and never had another issue. The truck has over 198,000 on it now and still runs really good. It is a 2012 with the 5.3 and 6L80. If and when I get another one I will turn it off immediately.
I have an '18 Sierra Denali with 6.2 with over 75,000km, No issues and i get between 9 and 10 l/100km if i drive the speed limit. I pull a 23' enclosed trailer with 2000 lb load and i usually get better than 19 l/100km. I'd get that mileage looked at. I guess yours is an AT4 but 19 is still to high.
@@markcarraway879why do you say garbage? Just curious. This video literally states that there is major issues with this motor. The Nissan 5.6l engine is pretty damn reliable, and they are very good trucks. Funny thing… I now have a Nissan Titan xd because 5 weeks ago, my 2020 Silverado 1500 6.2l with 26,000 miles experienced a catastrophic failure. Two pistons went through the engine block. Motor destroyed. After being stuck on the interstate for nearly 6 hours waiting for a tow, we got to the local dealership. I was than told that they would not be able to get me a new engine this year. With lack of support from the dealership and GM corporate on this issue, they can f*** right off. Life time Chevy customer gone. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-RaxChmJDbaQ.html
@@rodjboschyes, they are going away at the end of 2024, only because no one buys them. Not because of lack of reliability, as proven by this video. This truck and motor has many known issues , yet people still buy them. So you cannot tell me that the Titan is going away due to lack of reliability. They are reliable.
Yeah, 93 octane isn't even available everywhere. Here in california, you don't go higher than 91. So hopefully that 2 octane difference doesn't make a huge difference with the motor 🤷🏽♀️
So sort of like the 5.7 hemisphere in 1500s... treat them like race cars... don't idle them... turn them off when at stop.... and get on it when it's green... idling kills them over the long run
Very cool truck I would of considered this purchase but I changed up and went diesel 6.6 this past weekend with no regrets . I am towing in the near future with a travel trailer. And this 6.2 doesn’t have a 6 seater option . Nice truck still but I am won over on the diesel side .
The Coyote is a solid unit. bottom end torque is lacking a little but that top end power is incredible. and as you mentioned they are wonderfully efficient.
The only thing you forgot to mention is California and the oil companies are responsible for every single bit of it. My 1976 Ford 360 c.i. still gets 15-16 mpg by the way.
I put a catch can on 17’ 5.3l and now has 97,000km on it. The catch can was installed at 1,300km and now have about 6-7 litres of gas/moister from the catch can and that doesn’t build up carbon on the valves. To this day it runs as smooth as new👍
Your matco dealer drives it like he stole it, my 22 zr2 silverado was living in the range of 10-13L/100 and this is a taller truck with bigger tires....that being said the motor locked up on the highway due to main bearing issues before the first oil change so I went back to diesel with a new 2500 duramax
He did say he drives it hard LOL. but fair enough maybe his mileage is a little heavier then most. and wow haven't heard much bottom end issues. did they say what happened or maybe just a fluke? anyways can't go wrong with a 6.6 Duramax. those newer L5P engines are very solid.
@TheGettyAdventures apparently there was a bad batch of 6.2 motors going around who got affected, I briefly worked at a gm dealership as a tech and saw quite a few escalades and 1500s with the 6.2 with the same bearing lock up, you hit the start button and it sounds like a small hammer hitting metal lol
Fair enough, I wonder what would be causing lifter issues on the 6.6? or is just the odd bad lifter maybe due to chance when the engines are being built?
@@TheGettyAdventures I would like to know myself. If I had to guess I would say cheap material on the lifter and camshaft and/or oiling problem. It always seems to be one lifter and cam lobe.
@@JeffFoster-s5v please reference your source. Never heard of a 6.6 gasser with bad cams and lifters. Maybe you are confused and mean the 7.3 ford gasser? Those are delaminating cams and lifters like crazy
I have worked on way too many hemi engines with lifter problems tick tick tick. As a tech i see more hemi engines with problems then Ford or GMC Engine working in the Oil Field in Harsh conditions.
GM is investing almost a billion dollars into research and development of a new v8. That tells us something. The 3.0 diesel is the best option for now.
"More reliable engine options"... agreed, but can you list one or two? I'm curious where you would rank these engines in the half ton line up vs the competition.
In terms of V8's I would say the 5L coyote is a more reliable engine, I would even venture to say the 5.7 Hemi's are more reliable at this point. If you want a GM product I would highly look into the 3L Duramax. I think that engine is actually very well made.
The 6.2 Ford is the best these days. No dfm, no direct injection, still stuck behind the 6r140 6spd auto, which is bombproof. Not good mileage, but powerful and ultimate reliability. The 3l Duramax is an opel design I believe, which means it'll be a disaster eventually. The timing set is at the back the engine for gods sake.
Carbon buildup isn't an issue on this engine family. I have a 4.3 with 260,000 miles on it no issues so far. No reason to expect that the 5.3 and 6.2 would have separate DI issues.
OK, I didn't know they even still made that engine after discontinuing it in the trucks. Good for you then. How does one get 260K miles in two years? That's a lot of driving!@@joshuahedrick
@frederickdouglass7517 I use it for courier work. I wouldn't be surprised is GM stock piled the long blocks and actually aren't making them any more but I could be wrong. Their slated for use in the vans thru 2027.
I drive a 2022 work van with the 4.3, great little engine when mated to the 10 speed. Drives better then my previous 4.8 with the six speed. Been driving these Van's since 1995, better creature comforts now in the newer ones
@@ridynh7923no. However, the new LZ0 does come with extra oil in the pan when new to help with break-in. I’m on my 2nd 3.0 - LM2 (traded up) and have not had any oil loss or issues with oil.
Just a fantastic review. So many good points made. Gives one a lot to think about. I had my mind set on a GM 6.2 in a 1500 but after hearing all of this, well, I'm going to have to rethink this whole 6. 2 thing. Thank you very much...........
I just want to add my comment. It was a very good video but I’m not sure where he got the mileage rating or maybe the GMC is worse than the Chevy Silverado. I did turn off my fuel management system and I am still getting 20 miles per gallon on super with an S and B intake. And that’s doing it by the math and the miles not with the ticker in the truck just my little comment to let everybody know that turning off the fuel management system is definitely a good idea. The truck responds and actually drives like a 6.2 L V8 much more enjoyable still get great gas mileage and have all the power to enjoy the truck.
I have a 2023 RST w/6.2l w/NHT towing package and tow a 8200# travel trailer 2-3 times a month. Love my truck...but.. 14,000 miles on it and it spun a rod bearing so i took it to a dealer where a friend works as a mechanic(20+ years). After getting the engine replaced i asked him what the deal was and he said that they believe they are having oiling issues as he has done (5) 6.2l replacements in the last few months, some as low as 10,000 miles. Makes me wonder if it is due to the variable volume/pressure oil pump?
I need a awnser on my newly bought truck, 2023 RST 6.2 silverado @ start up i here a ticking under the truck, sounds like in the oil pan rear side, this truck has 2,300 miles, i shut off air conditioning, is still there, is there anything you can tell me or is this normal from the deactivated cylinders at start up, help im not sure what to do at this point?
Regarding the higher octane fuel, the standard gas motor has a compression ratio of 11 to 1 6.2 has 11.5 to one. It is a very small difference or am I incorrect Isit really that tight of a tolerance on the regular engine for the fuel ability. I feel like it’s less than a 4% increase in compression and if you had any sort of impurity in your regular gas in the other motor, it would be having problems. I would think you would need like a 14 to one compression ratio for it to be a problem not running high test.
Hello from North Carolina. I would not mind using premium fuel with the high compression ratio, The DFM reminds me too much of Cadillac's 1981 disaster, the V8-6-4 modular displacement engine. My father had one and so did I. GM seems bad at pushing technology that is not ready for prime time. You being so young, missed out on other GM greats such as the Olds 5.7 Diesel, Cadillac HT4100 v8. I wonder which 1/2 ton you like the most, this truck or the Duramax? What the heck is a variable displacement oil pump? Enjoy your channel.
I think he made a 4cyl in the 70s that had hypereutectic aluminum cylinders as part of the block to save money on installing iron liners. Aluminum cylinder walls with iron compression rings. You do the math.
Whats replacing the 5.3? The new twin turbo 6.0. The long stroke dual twin volute v8 engine of the 2026 silverado will pump out a dizzy 780hp and a neck jerking 1300lbs of torque coming in at 1600 rpms.
I looked and could not find a report of actual % engine failure/issues for the 6.2/5.3L. Is it actually 5% or 50%+? Selling nearly 1M trucks a year, GM could not manage this being above 3%. Have you found actual data on the issue? I think the GMC looks best, would like it with a 6.2L, but not sure I want to sign up to Cam and tune the engine at somepoint in its life.
Me lol my zr2 had the engine lock up on the highway before my first oil change. Got a new long block replaced under warranty and went right back to the dealer to trade in for a new 2500 duramax
