Owner reviews for engine oil

Castrol Power 1 ultimate is great and cheaper too.

I would recommended shell ultra 15w50 . KV100 is 20 which is thick as fuck and won't shear down quickly. Mogul 7100 is thin and will shear down to 40 grade and internationally considered garbage oil. Shell is made of group 3+ base oil so its going to perform better.

I run Amsoil small engine oil in my 2000 inverter.

Valvoline Advanced with black Wix filter!

Rotella 5w40 only. I daily and track mine

I do penzoil. Amsoil is good stuff too, penzoil is just easier to find. I do the ultra platinum. And I use wix filter (black one because it has the same valve the oem filters have).

Amsoil since day one, never let me down and improves mileage as well.

I've had my '88 GLI 16V for over 20 years and always used mobil 1 15W50 without issues.

Valvoline 5w-30 full synthetic for good cold starts in winter and a royal purple oil filter for good small particle filtration.

Amsoil Signature 5w-30