Rowtella T 15/40 is hard to beat, been using it exclusively in everything I own from the garden tiller and riding mower up to my F-250, wife's car, daughter's car, 65 Fastback, and my company car (Toyota)........ for about 15 years now!!!!!!!!!!!!!!!!!!!!!!!!
BTW: as of today the Toyota has a tad over 352,500 trouble free miles on it and other than the
oil in the motor when shipped from Toyota, it has had nothing but Shell Rotella T 15/40 in it with
oil/
oil filter changes every 4,000 miles..................
David