Quote:
Originally Posted by johnmyster
I may even try 20W-50.
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I used to be a 20-W-50 freak...then I got smart. Hot 50 wt is thin, cold 20 wt is like glue on crank-up. This is when your (cold) engine really needs oil protection ... visualize rings scrapping on cold steel walls. Cold oils are not gonna "sling" easily from spinning rod big ends.
Then, I spoke with a Pennzoil rep. Most of the wear occurs cold. The oil is still drained down from the overnight sit... it started this sit duration hot ( engine soak) , so the oil was super hot ( and thin) and drained down from
everywhere ( except from the very close rod & main clearances).
You come out in the (cool?cold?) AM, turn the key, and wham! Things start happening. No oil things. Bad.... 20-W-50 bad. Like I said...I USED to be....