Posted 3/1/2021 20:06 (#8866793 - in reply to #8866769) Subject: RE: Engine oils for older engines
What was old is new again, my Schaffer oil dealer says the new oil standard coming is 10W-30 and that it will work fine in anything I have been running 15W-40 in.
Here is a link to the Tech sheet for it and it looks like older engines are fine with it: