Not Ranked
I've been down that road. The guy who built my car was running Mobil 1 5W30 synthetic. But Bill Parham (who built the engine) insisted I run 10W50 (I think) non- synthetic. So I'm taking Bill's recommendation and running the heavier stuff.
__________________
After a good hard ride.....oil pressure is over 50, temp is below 190, she idles and no new dents. LIFE IS GOOD!
|