Best engine oil!?
Neither of us has ever suffered a lubrication related engine failure.
My MR2 went 193,000 miles before I finally blew the head gasket
(I never adjusted the valves, probably should have!).
I pulled the pan and the bearings looked new; there was absolutely
NO sludge in the engine and the camshafts basically looked new, too.
My old Fiat had 226,000 miles on the original bottom-end when I sold it.
Regular Castrol GTX 20W50 changed every 3,000 miles.
One thing to remember is if you switch from regular dino oil to full
synthetic you may see some oil leaks. Many of the MR2 guys have
reported new leaks after switching to synthetic.
I change the oil in my GS every 4,000 miles; between oil changes,
when I check the oil it still looks yellow on the dipstick.

went immediately back to regular castrol 10w30 and auto-rx and managed to fix my mistakes... never again
Celebrating Lexus & Toyota from Around the Globe
It's recommended in my manual to use 10w30....but I have no idea what these weight values mean...and what different weights matter where...








