Cat C15 "Knock it off" has major engine damage and a very unhappy International DT466. 

As a diesel mechanic myself, my favorite part of these situations is always what the driver or operator tells you: "It just shut off I don't know what happened" "It just started making that noise" "Somebody else drove my truck" "It just needs some oil" "The check engine light just came on"

As inconvenient as it is that tow drivers almost never reinstall driveshafts, I actually prefer it that way, and I prefer it to be noted on the RO that it was towed in and the driveshaft is disconnected. Probably no tow driver on the planet has a properly calibrated torque wrench for reinstalling driveshaft bolts. Those are a safety critical component, if they fail the chances of a wreck are high. Every time I have a unit arrive towed in with a driveshaft disconnected, I get a new strap kit, with new bolts and fresh threadlocking compound, reinstall the driveshaft and torque to spec. Is it a little inconvenient? Yes. Does the new strap kit increase the cost of the repair? Yes, a little. As far as I’m concerned, all of that is better than the unit going down the road and killing someone because the driveshaft came loose on the highway. I prefer the service writer note on the RO that it was towed in, but even if they don’t, that’s part of my walk-around. Even if the tow driver reinstated the shaft, I’m going to notice the marks on the strap bolts, and replace with a fresh strap kit: it’s cheap insurance.

If you want to get rid of that beeping in your post processing, the audio filter you would look for is a 'notch filter'. Apply the notch filter and then set the frequency of the notch filter to the frequency of the beep. In this case, your beeping is at 4kHz.

I was an International tech for 16 years and a few things on the DT466E: 1. We also call it a HEUI pump 2. To spare yourself from the beeping, pull the buzzer out of the fuse panel, looks similar to a relay but you don't even have to open the panel door if it still has one, don't forget to put it back in 3. Those oil pans can be a pain to get off, usually require some strategic blows from a dead blow hammer, they are even worse to clean off the pan, an air chisel is your friend 4. While those heads do like to crack between the valves, they usually don't leak coolant from a crack on the head itself, usually it's the injector cup if coming from the head, but most likely it's a head gasket Interested in what you found, either way it looks like it's time for an overhaul

As a long time "Cat" mechanic, I generally agree with and laugh at your comments.. Thank you for your presentations. Regarding Internationals, I agree with what you say, but bear in mind Cat and International have a long and tempestuous relationship. To the best of my knowledge, Cat owns International after a lawsuit. Anyway, I have a funny story about Internationals: I was working for a large mixed fleet company with a few Internationals, and one died on the road.. Being unfamiliar with Internationals and totally overwhelmed with other work had it towed to our neighbor the International dealer, whom we were friends with. After a couple of days and pressured by the Brain Dead Branch Manager I called them up asked how our truck was coming. The answer was "It's being towed back, It died during the test drive [after repairs]. I just broke out laughing, the BDBM was pissed, at me. As to the Fleetguard filter, Fleetguard is a Cummins company. As "Cat brainwashed yellow" people we don't like to admit it, but other manufacturers such as Cummins do know a bit about engines and filtration. What you see in the Fleetguard filter is a two stage filter. The full flow paper section and the finer "depth" section. The full flow part takes all the flow and knocks out the big pieces above 20 microns, give or take, it is more complicated than I can explain in a few lines. The "depth section" is finer, has a percentage of the full flow diverted usually through an orifice and eventually all the oil gets super filtered. A Luberrfiner. A lot of trucks/ machines used to have a separate Luberfiner but they fell out of style. In manufacturing Cat has traditionally relied on close tolerances in manufacturing, but large clearances between moving parts. Tolerances and clearances are not the same thing. Because of the large clearances, Cat engines tolerated larger and more grit. Hence the filtration systems did not need to be so fine. I disagree with this as the very fine material in oil is a lapping compound. Causes wear to happen Cummins however chose closer clearances, which required finer filtration, hence the Luberfiner and now the all in one two stage filter. I would say you can never have enough filtration: Except at a time in the past some of the anti-wear additives in oils were being filtered out by the Luberfiner. I think that day has passed as I think those additives have been removed. Correct me if I am wrong, I admire your cutting the oil filter open. Best diagnostic tool ever. Oil samples are 75% a scam. Far better off to just cut filters open from time to time and have a look see. Admire your contributions, Thank you.

I have other truck drivers always ask me why I buy the “expensive” cat filters and I’ll show them videos like this. To prove to them that CAT filters are far superior to the rest!

I work on stationary Diesel generators, and i ones had a customer complaining about alot of condensate comming out the crank vent. I pulled the dipstick and was greeted by a fountain of mayonnaise! Turned out there was slightly more water in the oil then oil. Problem was the neighboring construction site wrecked the Exhaust pipe in the ground and rainwater filled the engine while it was shutt off. Engine was completely done! Bores where on the verge of seizing up, everything covert in thick rust, Turbo was frozen in place, Rocker arms barely moved by hand..... But it still ideled fine. 😁 Fortunately is was just little 7liter Iveco engine, not some 2MW maschine...

I'm just jealous of the amount of rust that are not on these trucks, I live and work in Eastern Canada for reference

That was really cool how you found the exact location of the coolant leak inside the engine.

Sludgy slime in the breather tube is a sure sign of coolant intrusion into the crankcase, excellent videos as always. When I check my oil on my 5EK I stick my finger in the breather tube and make sure no slime present. Your a very thorough mechanic sir.

Hey Josh just wanted to say that been watching you for a bit now and I'm really inspired with the care you put into your repairs I just became a entry level diesel tech and want to eventually become a experienced CAT diesel tech like yourself because there ain't nothing better than CAT equipment 💪💪 Thanks again for these very entertaining videos 🤙

Hey Josh, love your channel. As a retired truck owner...never a tow truck, I learned decades ago that it is towing industry policy not to re-install the driveline to avoid liability.

Bro I work for Walker. And if we bitched about a customers spit bottle on camera we would be in a lot of trouble. They’re bringing you the rig customers always #1!

Great video. I work in an International shop and I too HATE that damn buzzer when the key is on. Got a little Easter egg for you. If you press and hold both the mileage reset button and the down arrow panel button for 5 secs together, it will kill the buzzer. You can thank me later.

“Please get rid of your dip spit bottles before bringing it to the shop”…….. 😇 I’ve never left em in there……😰

Really liking this "IN THE SHOP" format. I hope your superiors stay cool about it. Looking forward to more of these starring "Wounded Jewels".

Outstanding! Yes sometimes the cost of an overhaul exceeds the value of the vehicle. But an overhaul might be expensed in one year so if the company is having a good year, the tax break of an overhaul tips the scale over a decision for replacement which must be deprecated over a longer term.

Between 2012 and 2020 my c15 was driven about 700,000 miles. Always use cat filters and never had any problems. Inspected the inside of the oil pan for debris when I replaced the oil pan gasket. The oil pan was very clean. Another fellow is running that truck now and it's still going strong. BXS Series

Careful just rocking the shift lever to check for neutral. Some of the towers are so worn out they will feel like they’re in neutral when they’re not. Also, some of them (especially with long sticks) will fall into gear when you rock them just right. I shift the range select to check (if there is air) or I pop them into a gear and back out/use the clutch.

I've been watching ur channel forever i got 1.252000 miles out of 425C only cat filters Rotella 15 40 inframe and pump done by Doug Burdick in 2007 still runs like new 6.7

I have seen quite a few of that generation of DT466 develop coolant leaks between the block and the liners. The o-rings that seal this area fail.

I cut a section out of the oil filter element. Keep it folded up and run some mineral spirits over it to soak the paper and oil. I take the element section and put it in a vice and squeeze the oil out. I now have a fairly dry paper element and I can see any particles clearly. Heavy carbon shows up better and metal fragments.

Been running cat filters since your comparison vid ...quality parts = peace of mind

Pretty awesome destruction video Josh. Both are needing rebuilds. Great to see David get one destruction too. Great for the channel. Thank you for the shout out Josh always loving to help channel out. Happy Sunday 👍💪👊💪🛠🔧🔨💥💥

17:18 Recently started working for a diesel engine parts supplier and learning the basics. Really enjoy watching your videos. Keep up the great work, very informational.

Never thought I’d see my scale model truck out in the wild, that blue Kenworth t660 is freakin sweet

I worked on a fleet of trucks back in the 90s and early 2000s mostly DT466. Coolant in oil was cylinder liner o-rings 90+ percent of the time.

Hey Josh watching your tutorials for awhile and can see what you experience in our shop. You guys probably don’t have issues with never having a slow week. How many mechanics at your shop and where do you rank in seniority. Keep up the excellent work.

We use to use air bag jacks similar to your sponsors at my last job. Different brand but they were great.

Lot of job security in this video! Really enjoying your channel!

You're Brilliant at this!!! I've learned alot in just 2 weeks

I’ve compared prices between Cat and Napa filters and actually the Napa filters were more expensive than the Cat filters. Also I’ve noticed the casing on the Napa oil filters is much thinner than the Cat. I removed a Napa oil filter from the truck and the casing got all bent up

It is very rare the tow driver puts the shaft back. More than a few times I find it would not be possible for them cuz they lost one or more of the bearing cups.

The DT466 I think uses the same kind of system in the 7.3, 6.0, 6.4 liter engines in Ford F250 up pickups. When the injection system is working, it's great, but this setup has many flaws and one little thing can keep them from even starting or running. Like the DT466, oil is what makes the injectors "fire", the system is complex, and relies on o- rings to keep the oil in the right places and working, so if there is a problem related to o-rings it won't start or be very hard to start. So when working on the injection system a lot of things need checked, some under the intake, good injector oil pressure though is key. The 7.3 IMO is/was the best and most reliable of the bunch, and easier to work on. The 6.0 was a good engine when they were right, but had weak head bolts the heads were prone to cracking, and fuel would get in the cooling system and render the puke bottle, hoses and anything rubber junk. A very difficult situation to fix, we had some DT466s in our fleet and didn't have problems with them. I am retired now but have seen many engine problems, and destruction, caused by carelessness and stupidity and just defects in engines. watch your channel quite a bit, budding mechanics should watch some of them, good knowledge makes a good mechanic

That vevor jack is awesome. I’m building my own personal truck. Definitely gona add this to my truck

DT-466 piston sleeve o rings fail and usually in turn will destroy a piston or two. Best bet is to do an in frame rebuild. Also one time on a DT 466 I had a water pump go bad and the impeller chewed a hole in the timing gear cover thus coolant in the engine oil. Thanks for the video.

Keep us updated on these two engines.

Good stuff , I enjoy watching . Also nothing but Cat Filters go on my MXS Engine . Thanks for the video .

There is a little button with a wire poking out of it on the streetside of the master cylinder. If you just pull it off the brake booster motor will stop. Don't forget to reconnect it. The beeper unplugs too.

Love the jack. Have owned for years and is invaluable for heavy lifts. I use on my 21k trailer. Jack up one side ata time to service all 3 axles at once. It is awesome and totally worth every penny.

I ordered the airbag jack. It’ll be easy to use with a glad hand air line

Adept i didnt know your shop was close to me until i saw the plates in this video, very cool

When the ISX cm2250 engine came along and the high pressure fuel pump shit the bed and flooded the engine with metal I found the Fleetguard filters failed to contain the metal overload and the cranks would be damaged, the engines with the Baldwin filters held all the metal and no crank damage was found, just my observation after doing over a hundred of them while at the dealership.

The store I worked at in high school had a lot of older "textile mill" ladies as customers. Many of them used a Cambells soup to dispose of their Tuberose brand snuff residue. They often left half-full cans in the kiddie seat of the grocery carts for us to dispose of. Yuck!

I like your opinion on tow truck drivers, 😜, I experienced myself more than once when u joint bands were missing or thrown away after driveshaft was disconnected.

Thank you for your videos, really appreciate it.

That jack is a steal for 169 bucks. Ordered one and used your code. Should pick up my two 3126 powered cat filtered FL70’s easily.

Been a long time since I towed a little but I was told we do not carry new straps and bolts for every vehicle and they should be replaced, also since we towed it, there is probably a reason we could not start it and test drive it. Used a sandwich bag for the parts and it was up to the shop to use new or old parts. Some dealerships said they always used new straps and bolts but if we had a tow on the same vehicle after a "fix" they often had the old parts on. I do not know how many times they can be retorqued without replacing the bolts.

Haha I love the roast on the nasty bottle in the cab

Thanks 🙏 for all your information and time. It is very interesting to as. GOD BLESSED

When working on international you can stop the beeping by holding the panel up button and the trip reset peg button down at the same time till it stops being

Interesting. I hope that we get to follow along with both repairs ... the DT466 will run almost forever if you take care of them ... it seems as though they aren't giving it the white glove treatment. The C15 should be a interesting repair, I know you've shown inframes before but ... always pickup something interesting when you do them. Thanks for taking us along! I Should've gone into turning wrenches instead of driving AND turning wrenches haha

Love the videos... No, you just can't explain to some people why CAT filters are worth the money. I've gotta go back and remind myself which C7 you thought was the least amount of trouble. Thanks for all the efforts to make these videos..

Oh my goodness, I always do a quick clean up of the cab before I ever have a mechanic work on anything. It’s common courtesy.

We are new viewers. Hubby is a diesel mechanic. Within the first few seconds of viewing my husband said it was a broken crank shaft. He said we have had too many of those in our shop. I'm curious to see what it is now.

It was a good year for A western state mechanic. Hey i just became an owner operator.

Duke's mayo with a touch of lime. Excellent videos sir!

I'm a firm believer in CAT filtration..... I even put them on my duramax 😁

That's kinda cool for a jack. The flexibility probably would be handy for off kilter lift points, or say using it sideways as a spreader.

A old time Cat mechanic told us that Wix use to make Cat filters. Cat got a shipment and spot checked them. They failed Cat's guidelines and Cat rejected the shipment. Wix took the filters and painted over the Cat label and put the Wix label on them and sold them.

My answer to why tow truck drivers don't reinstall drivelines is that they generally are not mechanics, and it pushes the liability of the driveline violently coming part off of their plates. I used to work on a bus fleet where the local tow company reinstalled the driveshafts. And we had to go and double check their work cus half the time they would fuck up the straps and bolts putting them on or they weren't tight enough.

Speaking of filters a couple of years ago a neighbour farmer had a box of various filters and belts etc that someone else had given him as they had no use for the parts. He was going through the box and there was a new wrapped in plastic cat brand final fuel filter that would fit a 3406E or C15 and was about to throw it and I said no no, don't throw that filter as it will fit either of your two trucks that have C15's. He said oh ... but I use XXX brand filter and didn't know how he was going to deal with that as it would be "confusing", I would not be surprised if he threw it away after I left.

Thanks for watching guys, special thanks to VEVOR, Jeri and Daniel for supporting the video and sending pictures. Save on the jack with VVJACK10 on the manufacturer website: bit.ly/3AhFS3q Amazon Affiliate link here, although it is less expensive through the manufacturer link: amzn.to/3AQsVPz

This guy seems to know his stuff as far as tow drivers no comment al and sons are great

Well you are making me second guess my napa filters on my 2WS. 😔

Good Morning PRODIGY Adept Ape Sharing what you know with us Thank you very much helpful video information Take care and have a great day PRODIGY Adept Ape From Nick Ayivor from London England UK 🇬🇧

Rear main bearing spun, wrapped itself welded to the crankshaft. Why it was mentioned that there was a no start. I like the shiny cup with gold letters.

I like this in the shop format

With some companies, even the OEM filters vary. Back in the day, OEM Nissan filters were built like tanks. Because of the part number and rarity of the Nissan 300ZXTT, you can still get one of those OEM filters. However, for the past 20+ years, many Nissan OEM filters are the same junk you would find at a discount oil change shop. Nissan just writes their name on them. If you own a Nissan, you can get Motorcraft filters intended for a Mercury Villager. They are just like the other Motorcraft filters, they just happen to fit certain Nissan engines. 11:10 It might be called "HPOP" short for "High pressure oil pump." That's what Ford calls it in the 7.3 and 6.0 PSD. 15:36 Usually NAPA writes their name on the cheapest Wix filter.

I do heavy towing for a living. We do not put the driveshaft back in because the straps on the u joints are meant to be used one time. The liability of putting on the driveshaft back on without new parts is why we never put them back on. Also have to give the mechanics something to do;)

Josh , all the trucks out back in the beginning of the video is called ....job security .

Good luck finding Caterpillar parts for that rebuild. I have injectors on backorder from January

Tow truck drivers in Australia dont put tail shafts back in. I once had a service manager tell me, that it was normal for a 6 month old heavy truck engine to be blowing grey sludge out the breather tube. Turned out to be a known problem of welsh plugs in the head weeping coolant into an oil gallery.

Hope the cat gets saved. Need more cats on the road. Fram filters are junk also.

Love the new intro video josh ..great video as always

On big troubleshooting jobs I've taken the time to open the dash and unplug the speaker

Pleaseee do a toolbox tour, I think that’d be awesome.

I watch a few of the tow truck RU-vidrs, and one of them (I forget which) once explained their reason for not refitting the driveshaft. I don't know if it's a good reason, but he said it was for liability. He's not a mechanic and doesn't have the correct installation procedure and torque specs for the bolts; doesn't want to be responsible if it comes off going down the road because he did something wrong. He preferred to leave it to someone qualified to reinstall it.

Guilty, as a former wrecker operator of 2 decades, evey shop has different policies. Some want the driveshaft in and some want it left out. Usually for ease of pushing around to get in the shop. I've been yelled at by 1 cat dealer for putting the driveshaft back in because they just put a forklift behind it and smashed the bumper in on a service truck. They released the brakes but never checked the shifter. And the dt engines have good and bad variations. I ran a 94 4700 rollback with a dt 408 in it. All mechanical, didnt even have cruise control. Turn the ignition off then kill the fuel to shut it down. Most reliable engine ive ever run. 800k and then the truck fell apart around it. Fired up every time didnt matter how cold. Never plugged in and had no block heater either. She just sent it every time i turned the key. No HEUI system either. Huge injection pump left stock, a little under powered some times. Only problem i had with it was around 590k when the factory water pump took a dump and literally exploded apart on the pa turnpike at 75mph at 3 am going around philly. Other than that, great reliable truck til the rust took her out.

That cat looks so fun to work on. Loaded up with emissions garbage and general nonsense.

6:38 At first glance I thought this was a photo of the Air Bag Jack you just used after either leaving it out in the sun for a million years or after it caught on fire or something!!!! 🤣🤣🤣✌🏽

Tow truck drivers don't install drive shafts due to liability reasons. and they usually don't have mechanics certifications to work on public vehicles.

Watching this is not easy as an owner operator wondering when it will be my turn to experience that mixing of oil and antifreeze with my series 60 detroit..thanks for the nightmares...lol

I often run an air hose out and air the system up to shut up the beeping.. 150ft air hose comes in handy alot...

I bought that jack and it works great!

I've worked on a few C15s installed on oil rigs. I've seen multiple crank shaft failures.

Thanks 🙏

Love your channel Josh!! Thanks for sharing your days. Or should I say horrors? I’m surprised you work on stuff that’s not CAT. I’ve seen CAT dealers that wouldn’t even entertain anything but CAT to be worked on at the dealer.

our international yard truck with a Cat c15 acert goes thru 1-2 gals of coolant everyday .right out the stack.its going to grenade one of these days .should be fun

I didn't know NAPA filters were so low quality. I have always used MANN filters where possible but I have never worked on anything more than 7.5 ton.

"do you see the work behind me?" reminds me when I was working on RJs back at Bombardier in WV, we went a few months without much work making bare minumum, finally a bunch of aircraft start lining up for C checks (lots of hours) and one of our guys yells "Meats back on the menu, boys!"

For the International, for what they use it for, it would be best if they fixed and overhauled the engine. It’s much cheaper than a new truck, and the engine will be good for quite a while. The in frame kits are reasonably priced.

Cains or Hellmann's, in that order. Great vids!

As a towing operator. We mostly charge by the hour. In order to reinstall it, it generally costs more. Carriers and customers don't want us to many times. Usually higher pricing us vs mechanics time. Insurances don't want to cover drive shaft reinstallation issues, as we aren't mechanics and have no training nor access to torque specs and don't have a torque wrench.

The International beeper is just under the dash in the fuse/breaker panel. I always yank that summbitch out when Im working on one.

The bottom filter element is suppose to filters 100% of the contaminants out of the oil.

I have a quick question what’s going to happen when everything goes electrical I really feel bad for you guys that are working hard to keep us truck drivers going

I know an old skool mechanic who said one time he was chosen to work on a cab over. Anyway, the driver brought it to him, they put the cab over, it smelled like piss. Turns out the driver had a “convenience tube” it ran onto the hot engine. My mechanic friend told him to wash it before he would work on it. Driver threw a fit. Come on drivers, take pride in your equipment!

Sweet jack!

I really enjoy your videos.