Dino oil. Pennz 20-50w for 170,000 miles and looking toward 200,000 miles without the engine ever being opened. Boy if I would have used the high priced spread i may have made 300,000 mile, what do you think? But at this point, I wonder how much($)I've saved?
Duck for the cannon will roar on this subject.
Happy Trails Beep Beep from Houston