I use Mobil 1 in my expensive Mercedes engines, even though they probably don't need it. (Dino goes in the rest of the fleet) I figured to eliminate oil as a source of problems. Also, I've read anecdotal data that suggest the synthetics greatly reduce wear so my small brain reasons that using them will push off the overhaul date to sometime after I die. I like the 15W50 Mobil 1; it doesn't seem to thin out when hot so the oil pressure gauge stays pegged most of the time.

230/8