Detroit DD15 Longevity and Durability 

the problem is never the engine its always an emission system problem. my truck has broke down twice and both times were emission. the nox sensor and a def injection block.

ive never seen an engine that clean...especially with 700k miles on it. i call shananigans.

i m 100% sure they pressure washed before making this video.. 60 series the best

760K on a maintained big motor isn't anything special. Start checking after a million.

We will miss our fleet of 12.7 series 60s when they are gone. None of the new emission engines compare in terms of reliability. Detroit, Cat, Cummins, Volvo emission engines can all be found beside your favorite interstate puking their guts out. The pre-emission 12.7 was a true money-making piece of cast iron and steel.

I work on these engines a lot and if properly maintained you can reach 1,000,000 miles with ease.

I do have to say. I've been working on the DD series for 6 years at Freightliner. The engine would not be that clean for sure. Cam frames, oil/coolant modules, crankcase vapor separator, and air compressors are the most common leaks. That's the biggest thing I fix is oil leaks. Very few valve cover, front/rear main seals, and rear structure gaskets. I've seen plenty with holes clear through the block for no reason, some had reasons due to neglect. Over all the performance of a 495 hp DD13 to a 515 hp 14.0 S60 the DD13 will run circles around the S60. DD15 is tuned for fuel economy so it doesn't pull as aggressive as a 13 or 16, unless you get one with 561 hp then it will pound the ground! If your looking at getting a DD series engine here's some tips. Got service history if possible. A dealer should be able to get the claims history. Around 450-500k miles you'll see came frames leaking, engine sensor harnesses will fail due to wires chaffing inside the loom, and oil pickup tube orings causing low oil pressure at start up. Dpf's will usually last 450-600k depending on operating loads and such. SCR cat will last around 650k unless a previous failure burned them out or poisoned them. Early DD series (08-12) had injector cup orings problems, but most all of them would have failed and been repaired by now. The internal shots in the video are exactly what I've seen in the field. I pulled one down that had 850k miles and had a wrist pin retainer fail. All the bearing looked brand new. Liners and rings had wear but plenty of life left in it. These bearings are very sensitive to dirty and low oil pressure. They can scratch and be fine, but if something big enough gets in the material flakes off, or metal to metal contact, and then its by by rod or main bearing. These have spattered bearings, not multi-layer. I do like this engine. Its easy to service and maintain, but parts are $$$$ and parts availability is still a problem 10 years after introduction. It's still a machnical thing made by humans and maintained by humans, so you'll still have problems here and there. The things can't handle lack of care like the S60 did, but you can overheat them to 265*F and they'll be just fine; dang belt driven water pump. I'd like to hear from the Euro truck drivers about the equivalent om470, 471, and 473. Is there an om472? Any questions just ask.

DD15 is a headache!!!! 12.7 THE BEST !!!!

Really depends on how well engines gets service. This engine looks like was taken care of.

Detroit Diesel, oiling down roads since 1938.

only good thing when you have a dd15 is they never rust .couse they leak like crazy

I’ll keep the 12.7. you can keep that abomination.

can somebody please buy him a better flashlight please

This is %100 unrealistic.

I'm sure it depends on the oil that is used and the frequency of how often it's changed and what fuel you run, not to mention HOW it is driven!

"There's no road grime or anything attached to the engine" Hrmmmm

You know that water plastic line running in front of the filter housing has been replaced at least twice

Dude I drive a 2015 evo DD15 and the engine has 360k And it ain’t clean like that

Stop lying to people, I spent over $10,000 last year alone on Emissions problems. Nox sensors, EGR parts, DEF parts, and all other types of issues. I'm sick and tired of it. I want to know who the idiot was that came up with this new clean Air crap. It's nothing but a headache, and it's extremely hard to run a business when you're in the shop every three weeks with after treatment issues

My friend has 1.300.000 miles on his 2010 cascadia DD15 engine. It does consume lots of oil, but it’s still running. Mine got 912.000 miles 505 HP and I never ad any oil from change to change. To mention that I do maintain it every 10.000 miles and I’m happy with it. Great engine, good power and pretty good diesel economy.

I'm willing to bet they edit the pressure wash part of the video!

As a fellow driver, I’m just curious right off the bat how it got 760,000 miles on it in 2 years as it says in the beginning. I’ve ran my ass off in a truck but 760,000 miles in two years is some trucking I ain’t never heard of.

They can keep it. I just rebuilt my 2007 14 liter 60s. Its loud. But gets 6.5 mpg with a full load. It's still profitable and cheap to work on. 16k for a full I frame at the dealer. On this engine u get just an emmsions system for that money..

You wouldn't see any leakage at the pan rail...........they removed it when they pulled the engine LOL looks like somebody pressure washed it

The forgot to mention the 235 times this engine went to the shop for emission related issues . I'll take a series 60 with 500k over a brand new DD15 any day and twice on Sunday .

LMAO if it doesn't leak oil then it's not a Detroit. Or it's a Detroit that shows how good steam cleaning works.

dd15??? never ever again!!!

The three wreckers I drive all have pre emission 12.7 liter 60 series Detroit's. little to no problems. love the engines

I have 960k on my dd15 and never have had a major repair and never been towed. Lifetime average mpg 8.6. My truck has amazing power. I run only the western US and hardly ever downshift on grades.

my cat c15 has 1.1 million no rebuild needed yet

let me know when any truck manufacturer makes a truck as reliable as a toyota, never going to happen.

lol i'm a diesel engine technician . This engine is Crap. Fuel System is a mess. it leaks everywhere . especially oil Cooler area. EGR and Dpf well is a Disaster . Keep Making it like that Detroit i never run out of Work.

I worked on freightliner for 7 years and not once have a seen a dd15 without any leaks. This was a rare 💎

This teardown and inspection is not at all biased lol, in my experience if an engine with any miles on it doesn't leak it's because there isn't any oil in it. Especially these new regen engines the heat cycles are insane. ice cold egts 80% of the time to meet the unrealistic nox levels, and dumping raw fuel in the exhaust to burn something that is already burnt. That is a recipe for failure in any engine, that engine was definitely cleaned inside and out for this ADVERTISEMENT before hand, also love how that TECHNICIAN dragged the conrod along the cylinder wall!

Bring back the original series 60..an i will forget i watched this nonsense

Mercedes-Benz OM 473 Diesel Engine. cough cough Detroit???????? Please....

Dude said it himself - "it normally should show signs of leakage." This unit did not. Well, that's the case when you maintain a truck well. It's normal to have no leaks after they been repaired.

This engine leaks like a mf. I work for freightliner and 70% of repairs are for leaks on that engine

Why did I have to rebuild my 2012 DD15 at 667k miles then?😢 My rings got stuck, and cylinder started grinding against the piston until I lost compression in 2 cylinders.

ive gotta make my engine known to dettoit for 1.1 mil miles no oil leaks and still running.Oh and its a 2010 model!!!

The series 60 was a great engine

Start checking gasket and seals after five year, see if they still last that long

That's a perfect steam clean engine

In the oilfields you are lucky to get a Detroit- MTU to hold up! 8 years in the industry and if it doesn't say cat or Cummins it won't hold up to the abuse!

Its totaly BS !! There is no engine like cummins n14 celect plus or d60 detroit..new engines are all garbage!!

Demand Detroit, huh? I demand quality parts & a decent warranty! Not half-ass parts & a warranty that covers you until your out the shop. Less than 40K miles in 18 months on a BRAND NEW bull gear in my 60 Series & I gotta replace it again. Might have to start Demanding Cummins or Caterpillar instead.🙄

I worked for a Freightliner Dealer. There's no way a Detroit engine can be this clean. It's been washed... 🤔

Now time to remove all the EPA trash off it to make it a cheaper and easier to maintenance as that thing is overly complicated.

No oil leaks? Please... you pressure wash it before or after removal from chassis? Cascading oil leaks from the oil filter/cooler housing and rocker box gasket after 250k on every. single. engine. period.

Three weeks ago i went out on a road service call when the driver said his DD15 went pop & shut down on I-15. Right before I got to him I stopped & picked up the connecting rod lying in the middle of the road. #2 rod went out the left side of the block, bounced on the road then knocked a hole in the power divider front cover before taking a line off a trailer brake can. It had 36k miles on it. Oh & I really love the location of the air compressor too, on the left rear behind the fuel system.

LOL. You keyboard Rambo billy big rigger's make me laugh. You guy's wouldn't know a good piece if it smacked you in your face.

I have a 2015 Detroit DD16 with 284600 oilfield miles and 13,200 hrs on it. Haven't touched anything but for P.M. service and belts. Never have had any DPF filter issues. I use lucas fuel additive every other fill-up and Lucas Diesel DPF DEEP CLEAN every 6 weeks.😎👍

DD15 is an absolute piece of garbage !!!My DD15 eat up $70k in 2 years! DO NOT EVER BUY A DD15 . EVER !!!! It will destroy you financially. I promise you.

In my opinion the DD-13, 15, 16 series Detroit engine are the worst engine Detroit has ever made. Constant problems with egr coolers, Dpf systems and the worst set up for a fuel system and most problematic I’ve ever dealt with or seen. Shit if you need to overhaul the engine and need to have the crank turned your shit out of luck because there are no undersized mains for these engines and plus all the timing gears and bull gears are on the back of the motor🤦‍♂️ where you have to drop the trans, clutch and flywheel and back motor mounts just to take the timing cover off. That’s enough of me ranting, you want a Detroit get your self a series 60.

I have a 2010 cascadia dd15 1.1 million miles original miles, replaced all outside components, and updates .Inside the engine i just replaced the injectors..bearings are at 90 % wear...and still going!!!

every dd15 engine leaks oil. the dirtiest engine ever.

I have 750k on mine and have replaced all my injectors, egr cooler, radiator, starters,alterators, multiple sensors of all kinds,Sam computer, and now in shop needing a 1 box. NOT FLAWLESS AT ALL. Maintained regularly with synthetic oil Lucas and motorkote. Truck even has APU for low idling hours.

old 60 bulletproof.Germans ruined them.

We have a DD on blocks right now with spun bearings, rod and mains.

CIS detective says they talked about leaks too much. GUILTY!

Simple fact, nothing is made to last nowadays and that INCLUDES commercial truck engines

This engine woulda had cam box done Rear structure Throttle valves Wiring harness Qcv valve A compressor Possibly a cylinder head as valves reseed into head They leak like all f#ck And those harnesses are junk.. Other than that they still last longer than a Cummins

Demand Detroit is really good. Just demand it, when you buy a truck, when you vote, and everything. New rule, to be elected President you must have owned and driven at least 3 Detroit's. 6-71's would actually make America great again

When he pulled the piston out of the bore, the lower con rod dragged horizontally along the cylinder liner.

Driving a dd15 Crap at 700,000 miles it's like dpf, and sensors don't get along very well I , spend more time and money in shops i liked more Detroit 60 series

just had one of these torn down because a main bearing cap was cast poorly and it cracked in half. Detroit sucks now...Loved the series 60, dd15 is shit. I'll never buy another detroit

Haha I can show you many cam frame leaks. Air compressor leaks. Oil mod leaks. The dd13 reminds me of the old oil slinging 8v71's from the 1970's. Also the plastic coolant lines leak. Was such a problem Detroit remade them as rubber but kept the plastic coupler which is what always leaks anyway. It runs a lit smoother then the red brand our company switched to. The dd platform doesn't do well in harsh environment per the us military. They still use the 60 series

DD13, DD15 make the best boat anchors. JUNK!!

From experience I've seen a ton of injector failures after 500k and cracked liners near 700k on these things and mountains of emissions problems. Let's ignore the tsb on loss of oil pressure as well due to orings in the oil pump piping, seen several with spun bearings as a result. As far as modern enginess go I'd rank dd15 behind d13 and isx15 in reliability.

Funny that doesn’t look like all the other 760,000 mile engines I’ve seen but ok

such a fake video with that many miles the engine would be totally worn out no DD makes it that far with no rebuild and no leaks. The new DD engines are the worst engines on the road.

2013 DD15 400k miles pan leaks. Today 2020.

My DD15 blew up at 150k and was out of warranty (past 5 years) so I had to pay 38k to rebuild it and Detroit in Orlando did a shitty job. Detroit has gone to shit since they’ve stop making the S60.

Engine may be good, but the damn DPF is what causes all the problems

My dd15 failed at 650k miles. Cylinder sleeve failed leaked coolant into combustion chamber hydrolocked engine destroyed internals had to get used dd15 with 250k miles because the wait for rebuild parts from dealer was over 3 months.

My DD15 engine break down at 760000 km. The 2nd piston just fall apart hit the head and crack the liner, causing the whole engine needs to be rebuilt!!! That happened 4 months ago and the truck still sitting at one of the freightliner shop! They said the factory not providing the parts!!!!!! Is this real??? How come there is no parts????

Can you guys post different jobs you do on Freightliner DD15 engines ? Example, how to remove / replace the DPK unit. Also, can you post videos on what types of services to be done on Freightliner DD15 engines at 100,000 miles, 300,000 miles, 500,000 miles, and 900,000 / 1 million miles. I’d appreciate it. Thanks.

Haha i love how it has " no oil leaks"

It's almost like England built that motor just before the common failure mileage of 720k miles. Funny about the fuel economy I only 5.5 out of mine and I got 7.2 out of my isx cm870

2 years 700K miles? Come on guys

This truck remember me the cristmas why? Has the engine lights always on jajaja

Yeah pressure washing an engine works wonders. I'll stay in the 60 series camp, thanks

I’ll show you real pictures of what they look like in my shop

They are laying those DD15 700.000 miles are done some of then 600.000 done

One in a million...,all the rest ones leaks a lot.

Haha, yeah right, that is why Western Star over in Australia are almost giving away Detroit engines just to get people to buy trucks powered by them over the Cummins engine! Even Freightliner had to start giving a Cummins engine option recently because know one was interested in them with Detroit engines. Say what you want about how your the engine maker that pioneers and everyone else follows, but Cummins outclassed you with the ISXe5 engines in every way, I have never met a truck driver who doesn't like the new Cummins. The problem Detroit have is being part of the Daimler group, they get stuck with having to work with the new Daimler group Eurotrash designed engines.

Ya he's so good but he's uses the word Motor, hate to tell u dude but it's an engine

2004 Commins engine I have 1401522.6 Original miles no rebuild.

this is a mercedes designed engine not detroit. note the timing gears in the rear like volvo and pacar and mercedes euro engines

How can this engine be clean? it has an EGR fitted, bet its not on the intake manifold, the emissions engineering regulations using the EGR technology seem good as far a pollutants go but not good for the engine, the manufacturers have to go to diesel particulate filters on the exhaust, I wouldn't buy this engine, the cleanliness inside the oil galleries is due to regular oil changes which is normal for any engine.

Flex revlon deberia aparecer el video de colombia en 1984:los crespos la nueva moda.

I have been a diesel mechanic /marine engineer for 47 years . I was trained at Rolls-Royce in New Zealand . I would put that engine back togather and return it for anouther 700.00miles

To get a great Detroit for truck: 1. Buy rebuilt/rebuild an 8v71 or bigger. 2. put in truck of choice. 3. Drive away from this shit. BTW if it don't leak it isn't a detroit.

volvo d13 1.3 million miles without rebuilding the engine!!!!

Great engine I prefer DD13 mines has 800,000 and is just as clean never broke down on me 🤞 and runs better than when I got it

I have a 2001 Freightliner century, every week I was spending maximum 300 hundred,, now I got a Freightliner 2009 casacadia with DD 15 and I’m spending 450

Well when you think about it if you maintain an engine properly in theory it should look like this as that's how it's meant to be maintained

I love Detroit engine is the best engine out there 🔥

BS those engines always leak. Mine did from the block.

Glad it took 30 years to find a leak