not a very good idea wingdr
The super knows his oil.Quote:
I'm just the mechanic, what do I know...when I told my super he said "not to worry, 5W20 is for CAFE only" We only use one grade of oil for everything, USE it!!! This from the 4th biggest utility in the country. So far so good?! Time and miles will tell us all.
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Ahem...all PCMO oils have made "other chemical adjustments" to make up for zddp. Some folks insist zddp works better than other, newer alternatives. I don't think anyone has ever posted ANYTHING conclusive. I'd just point out Syntec 0W30 aka GC isn't swimming in zddp.
As for using 15W40 in the winter up north....Sure, you can do it....it's just not the greatest thing in the world....
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Ahem...all PCMO oils have made "other chemical adjustments" to make up for zddp. Some folks insist zddp works better than other, newer alternatives. I don't think anyone has ever posted ANYTHING conclusive. I'd just point out Syntec 0W30 aka GC isn't swimming in zddp.
As for using 15W40 in the winter up north....Sure, you can do it....it's just not the greatest thing in the world....
Well... that may well be true...
The only reason I question that is the hotrod/muscle car community is saying different. They say they are eating cams.
Who knows what is what