1995 Dodge Ram 1500 5.2L-- Mobil 1 High Mileage 10w40.
1987 Buick Grand National Turbocharged 3.8L-- Trop Artic blend 10w30. Will be Mobil 1 high mileage very soon.
2006 Kawasaki Bayou 250 ATV-- Amsoil 0w-40.
2006 Kawasaki Brute Force 650 ATV--Amsoil--0w40
1997 150Hp Mercury OptiMax (outboard)--Amsoil 2 cycle injector oil (what the heck it's cheaper than quicksilver oem oil.
97 Camry V6 XLE with 74k miles, 03 Siena with 21k miles M1 5w-30 gld cap. I have used M1 since 80's with all sort of cars ad engines.
Honda 919 MC, Vav MC 20w-50 dino with 300 miles, will switch to M1 in 2k miles.
The last time I posted in this topic I was running different stuff so I'll update again.
In my 98 Corvette: PP 5w30, Wix oil filter
In my wife's 2000 Civic: Petro Canada Supreme 5w20, Wix filter
On the next oil change in the Civic I'm switching it to Canadian Tire's house brand Formula 1 5w20, which is made by Shell (and is most likely the identical formula)