Amsoil

Tractors and off road stuff, no way would I use it. Running in those kinds of conditions, the oil needs to come out. Too much microscopic grit in there no matter what kind of air and oil filters you use. I've never rebuilt an off road engine that ran on any of the 'extended' life synthetics that ran long oil changes which didnt have to have a crank, and usually a cam. Alomst always worn beyond where they can be ground. Regular mineral oil, if its changed right, I usually get the cranks polished 10 thousandths and theyre good to go.

Bottom line for me, I cant see it except maybe in a semi or other high mileage on road vehicle. Cars are cheap, relatively, and disposable. If you change the oil with any kind of rated oil the engine should last as long as the car does. Off road, no way. If its an engine I plan on rebuilding every so often, I sure dont want to be leaving oil in it long.

I had to replace the valve cover gasket recently and found some dark stuff laying in the crevasses. It was assembly lube. Absolutely no carbon or sludge buildup. You could eat off the top of the head. The body is starting to get some rust holes, but the engine still purrs like a kitten. Cold startup is a breeze.

I used Amsoil in my 1985 Cavalier and drove it to 270,000 miles. Most Cavaliers in the junkyards had less than 80K on 'em. I cannot say for certain that the synthetic oil is prolonging the life of my vehicles, but I won't switch now. My luck has been too good. I did not try the 25K oil change schedule. I stayed with the manufacturers recommendation, just used the Amsoil. It is more expensive, but less so than having an engine replaced.

Let's go Mountaineers,

Aaron

Some people like Pyramid skeems and some don't. Put me in the group that don't.

I drove my Saab sonnet for over 350,000 miles on nothing but regular brand oil and never had any trouble with it.

Walt

When people make statements about something being good or bad, it's hard to give them much credibility unless there's some rationale or data behind the statement.

Thanks,

Keith

The seats are a little tattered and the Earl Shieb paintjob is on it's third coat on the Pinto but they are still going strong.

Can't really figure why the ladies stopped going out with me but I've got some miles on my cars.

Both cars are at the shop right now something about the rubber hoses or other parts that have been failing, on one and those pesky electrical, and plastic stuff on the other.

The one mechanic said if I can get the granada to a "carb" man over in the other county I might have a chance of driving it again.

The oil's still good though.