Straight to business,
I am a proud owner of a 89 C1500 Cheyenne, 305 chevy engine with roughly about 430,000 miles, runs perfect never been rebuilt, about the only thing it's ever had done to it is the valve guides since it's been in the family but i stray from my question.
It smokes blue a little here and there and I'm due for an oil change soon anyway,
Somebody told me that switching from Pennzoil to Castrol would stop the smoking and slight oil useing that it does and improve engine performance, i was wondering if there was any truth to that.