You Won’t Believe What We Found! Inside the 900,000-Mile Engine

Today, I’m diving deep into the engine that’s clocked an incredible 900,000 miles! After previously exploring how fuel additives and top-notch maintenance, extended the life of the CP4 pump far beyond expectations, it’s time to take it a step further.

We’re tearing down this legendary engine to see how well it held up after nearly a million miles. The results? Let’s just say, you’ll want to watch until the end to see what we uncover—it might just blow your mind! 🤯

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[RichardsAutoAc]

That engineer is a perfect example of what good vehicle maintenance does over the life of your vehicle. Those bearings were still smooth. Minimal piston wear, good rings, etc..etc..etc.. This YouTube channel is great. I love it.

[xXairflightXx]

How cool would it be to see this exact engine completely rebuilt and put back into the same truck and have it monitored for the rest of the trucks life. Might be history in the making!

[Thinkingaway]

Reason this diesel made it to almost 900k miles was because the engine worked non stop for the majority of it's life. Cold engine running, stop and go, and idling is what kills engines both gasoline and diesel even more so than extended oil intervals.

[idahodoug]

Just found the channel - great testimony to proper oiling and filtering. Former Worldwide Powertrain Planner for GM here. The likely reason they chose the needle bearings was lower friction, lower weight and thus more available power. That these needle bearings made it this far shows Ford engineers made the RIGHT decision, not the wrong one. It could certainly be argued the bushing has more surface area, but only an engineer could tell us what the bushing tolerances would have done with a lot of heat cycles and the normal amount of dirt from a typical engine. This was certainly an outlier. Bravo to the owner. I hope he checks in here. I'm sure we'd give him a standing ovation if he walked into a meeting with my peers. An engineer's dream owner!!

[kurtisstutzman]

A neighbor of mine has a 92 Ram250, 5.9 Cummins, 4x4, 6" lifted trucks on 35" tires since it was 3 months old with 1.3 million miles...! He has never missed an oil change and just put it's third manual transmission in it a few months ago, but it's engine is still going flawlessly...!!! Thanks for sharing... Keep up your awesomeness. ..!

[slickrock]

In the late '90's, using parts I rounded up on Jegs/Summit, I built a pre-start oil pressuring system. I used a small tank, connected through the oil pressure sensor, wired to my ignition. Before I started it, by turning the key on, it brought the oil pressure up to about 5 psi and then I started it.

[leighholman]

Dave I watch a lot of your videos. One thing I see. Removing a steel oil pan with a chisel etc almost always damages or destroys the pan.
If you use some gas heat on the flange it softens the sealer and the pan falls off. No damage.
Keep up the good work.

[mackpoplin]

This man is the only man in the industry trying to improve quality (Less Profit). Every manufacture is trying to produce the worst product that they can sucker you into buying (to maximize profit at your expense). Companies have been disimproving things for at least the last 50 years.

[calmargarita]

I think as far as diesel engines go, operating under load is better for them than just daily driving. Pulling trailers around is keeping the engine running clean along with good maintenance. Same in Class 8 trucks, too. This driver understands his equipment.

[turtlekoff]

As a retired lube oil engineer with Chevron, this video stresses the importance of maintenance and regular oil change intervals. Not sure what brand of oil this gentlemen used but it was clearly a top tier product. Really enjoyed this video and glad I found your channel.

[oitgdqt]

Very interesting. My first new car was a 1999 Mercedes E300 with 796, 000 miles, the OM606 Diesel. The engine and transmission has never been out of the car. It has been running on Mobile 1 synthetic 10W-30. It still runs well. Currently we are replacing the fuel pump because the original one developed a crack and started leaking oil. The goal is to crack a million miles.

[Emory]

Interesting video.
I got a 07 Ram 3500 with 6.7 Cummins with 979231 miles on original engine.
Engine never opened up and maintained well with a bypass oil filter using good oils and filtermag on oil filter.
Bypass oil filter was only used about the last 1/3 of its mileage.
Engine works like new with more power then i need no kidding.
Best truck i ever owned Praise GOD!!

[WhatWorxDev]

Couldn't help smiling in disbelief at not seeing any copper peaking through the bearing.
Great system and taken care of too.

[patrickkelly]

I intended to just watch long enough until I found out what the motor was. I stayed for the whole video. Dave’s knowledge and experience is so incredible and he shares it so well. We’re lucky to have him and this channel to watch and learn from.

[brunonikodemski]

My 1972 240Z Datsun had 660, 535 miles on it, when we finally scrapped it in 2002. Was used as a family car, and multiple long trips. As a GM engineer, I was able to maintain it and keep it running. However at some point, common parts were no longer available for cheap, so there came a crossover, where a newer car was needed. We also had a 1975 Toyota Camry, which we finally gave away to Goodwill in 2005. It lasted another year, then the new owner trashed it because she ran it out of oil. We saw it along the road, abandoned, looked into the hood, and saw the obvious. It made me cry. Our regular family car, 1995 Honda Accord has 275K on it, and still going strong. I ran an estimate, and these cars have saved us over 2+million dollars, over buying a new car every year.

[NGH]

Three F's for longevity: Fluids, Filters, Frequency.

[russellwolter]

My dad's friend invented an auxiliary oil filter and my dad allowed him to put one on my 1982 Rabbit diesel. I drove that car for 496, 357 miles. The only part of the engine that was ever opened was the oil pan to plumb in a return line, and the valve cover to replace the leaking gasket. Sold the car to a diesel parts shop as a parts runner. The filter added 4 quarts to the system and changed the oil every 10k.

[robertmills]

Essentially, this engine needed a cam and lifters and would have been good to go for another 500K miles, . that bottom end looks great!

[dougjamesvandals]

As my late Dad always said "oil is cheap, engine parts are expensive". I change every 3k synthetic and often on my 2001 f150 supercrew it's 1000 because a yr has passed 😉 but yes oil and filters ..

[elijahheadrick]

That's what does it for me, the way Dave is on the floor with his guys, being helpful, being a cool guy. I wish that my owners/managers were that style, I would have stayed with my dealership for life man.