I plan to do a bumper-to-bumper Amsoil conversion once I get the cash flowing. The only thing we need to be worried about as owners of cars with a lot of miles, is the eliminaytion of deposits and varnishes opening up pathways for leaking that were otherwise sealed. Obviously its a problem that gets solved because it is revealed, but it can be anything from no oil leaking to your engine crying a quart every other day. More often than not, it is no to very little oil leaking, but the risk is there.
We have friends who use Amsoil in their Powerstroke trucks and Excursions who can't sing its praises enough- even the Power Steering fluid. Lol. I just scrolled down and saw Teddy's response. See? My points are the same as his.
The only thing that would discourage you from buying it is if you don't want to deal with bad seals and gaskets. Just remember, you'll wind up dealing with them eventually anyway.
Amsoil has pushed huge diesel tractors and semi's well beyond the 1 million mile and equivalent hour run-time mark. It really is good stuff. Near impossible to foam, near impossible to press apart (shear), near impossible to solidify, hardly thins out with temp changes (comperable to most other syns and all petro's), and lasts a long time.
It works well in differentials as well, reducing friction and dampening diff-whine.
I'm actually trying to do odd jobs to get some moolah for my tranny, as in the cold mornings my current fluid feels like sludge.
Don't you hate not being employed?