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Anytime you are towing or climbing a hill if your giving it more throttle and not gaining any road speed you are lugging.

I suppose we should get back to the 6.2L discussion. The nice thing GM did for you guys was they made a ton of those engines. So even if you have a problem with one you can cheaply replace it with another zero mileage rebuild. If I was ever going to buy another military 5/4 (which I don't...

I hate fear mongering of any kind, and I try not to do it. I guess the only thing I can give you now is an example. You would think the designers of the biggest and most expensive diesel engines in the world would want to design the most simple and efficient engines that they possibly could...

At this point since I don't have anything on paper to prove my points I will just have to post my experiences. I own 11 flat tappet engines, 7 diesel and 4 gas. They are all as old or older than I am. I use conventional oils in some synthetics in others. These are all off the shelf oils, and...

I have read through some of that site before, and I did suffer from the same headaches. Although I have not been on that site in a while.

Hey, I owned up to that. I didn't mean for that post to come off the way you took it.

That bit about the friction modifiers not playing well together came from the Mobil rep I talked to and I had to pretty much trick him into telling me that. I don't think I could ever get them to write something like that down on paper. They seem to be pretty hush-hush about their stuff.

I can respect your experience and would like to learn as much as you know. Unfortunately I have no physical documentation to prove what I say. Like I said it's just personal experience and what I have been told by the people in the know. I'm like you I just want the right answers that's why I...

I'm a carpenter/metal fabricator. I can build most anything out of wood or metal. I don't do mechanic work for a living because I like it. I don't think I would enjoy it as much if I had to do it for a living. I didn't want to call you out but turnabout is fair play. You seem like an...

By the way, does anyone remember what we were all talking about?

Sorry, the diesel engine was invented in 1897. Had to look it up.

1987 was not 50 Years ago, and diesel engines have been around for maybe 100 years. The patent was on the inline 6 cylinder design. Detroit Diesel was forced out of the 2-strokes by the EPA and needed a new engine design. No I do not build engines for a living just for a hobby. I never said...

Many of the oil companies had to remove all the ZDDP from their oils so they could start using their new friction modifiers. Like I said the ZDDP and the newer friction modifiers don't play well together. You may have gone through this rodeo before, just as I have, but you also need to stay up...

For someone who is as in touch with diesels as you are you should have known that Detroit Diesel-Allison built it's first 4-stroke diesel in 1980. They had to buy the patent rights just to get into the 4-stroke market. Pancake engines are opposed piston engines. These engines are the most...

The original poster began to ask about oil additives too.

The 6.2L engine was designed for GM by Detroit Deisel. It was one of Detroit Diesel's first steps into the 4-stroke market. You can tell that Detroit Diesel was kind of new to that game. Though the 6.2L is not what I would consider the worst diesel engine ever. I have to give that tittle to...

I read through all the posts, and realized that some of what I said may have been confusing. I will try and explain with a little more depth. First my comment on Shell Rotella not being what it used to be. I was referring to that oils film strenth. It has decreased by more than 20,000 psi in...

VP pumps suck. Inline mechanical injection pumps are the way to go.

Conventional oils have come a long way in the last fifteen years. They are closer to the performance level of the synthetics than most people believe. The only major advantage that the synthetics hold over the conventional oils now is extended drain intervals. If you change your oil every...

I was referring to the cancelation of forces in an inline engine. There are always pistons traveling in opposite directions from one another creating less harmonic vibrations. Fewer vibrations means less stress on the block which means less stress on the crank. The V8 design imposes stress...