Originally Posted by rickmay

I am not sure I agree with you on your choice of oil. And it is interesting how PeachParts perpetuates threads by subscription choices.

The condition of these "old diesels" is all over the board, and my engine, with 150,000 miles, is like new except for the fact that the gasket or seal between the block and upper oil pan is not so good. I have dropped the lower oil pan, and it is as clean as a whistle inside.

I have never done a compression check, but I think it would compare with a relatively new engine. I have seen Russel at Dieselgiant talk about turning over the engine (to adjust the valves) at the power steering pump (or whatever he suggests). This just ain't gonna happen on my car.

I am also a big believer in synthetic oil for any engine that is relatively tight. It is more slippery, it clings better to avoid startup wear, and it holds up for a longer period. If you look at Amsoil's recommendations on when to change the oil in our cars, it is not as long as you think. Marine oil on my engine, from my point of view, would be a real bad choice. Sawdust, anyone?

I am going with my gut on Amsoil. They are a small company that has more to loose than big oil by putting out a bad product. Who invented synthetic in the first place?