Are you looking for a good Dino oil?
Then 10w-30 or 10w-40 in summer, 5w-30 in winter, Best Dino for the money IMO is Chevron Supreme It has a group II+ base stock. GTX, Pennzoil, Shell are just as good but cost twice as much..
If you are willing to go to blends, ValvolineDurablend 10w-40 in Summer or 5w-30.
If you are willing to spend for synthetic it kinda dpends on how clean you think your engine internals are.an excellent sleeper oil with good detergency is the Castrol Syntec in 0w-30, (its a repacked Castrol SLX from Europe, thicker than most 30 weights more like a 0w-35, meets ACEA A3 which is a sign of great basestock for a 30 weight to be able to meet that, its appearance and smell as well as performance in some UOA's, indcate a likely ester base oil, like Redline,.... if you buy this be <sure> to check on back, MUST say made in Germany and ACEA A3 as some old stock ACEA A1 group III base oil is still around and not such a great oil and will say the excat same thing on front of bottle. works well year around has a great HT/HS)
If you feel engine is clean, ie it looks clean under your valvecover (peek thru oil filler cap) clean you can use Mobil1 0w-40 all year around.
Fred...
