Used oil test come back about 1200 ppm i hear, just got a second case for $29.88
There are two versions, the one with the SM or SN API rating does not.
Don't laugh but I have used Shell Rotella in my duster from breakin to today. it has all the zinc and additives anyone could need , and it costs less the. just my thoughts to your question, check it out.
Hi Dan, engine is a fresh rebuild with about 60feet of driving on it at the moment, I have quit a bit of performance work done to it, I expect it to run hotter and to breakdown the viscosity of the oil faster, the reason for the 20w50.
Why using such a heavy-weight oil as 20w50 or SAE 30? Only good reason to do so is that your engine is worn out, and if your engine is worn out it doesn't matter how much zinc is in the oil.
(And no, you don't need Zinc additive.)
Lucas = scam. Does not belong in your crankcase. See here.
Fram? Those jokers can't make an oil filter worth a damn, and they're not an oil company. I can't imagine why I'd pour anything with their name on it into my crankcase.
I'm not a petrochemist, so I don't try to play one in the driveway, mucking with the engineered chemistry of engine oil by dumping in random goop because the advertising makes me feel warm and fuzzy.
But that's just me.If you gotta-just-gotta pour extra stuff in your crankcase, read post #4 in this thread.![]()