Engine oil Shell or OEM Mazda

900 rs shell engine oil for my scooty. Amazing. Smooth roses amd better mileage.

All three I ran Rotella T6 5w-40. I ran 5K oil changes with OEM or WIX filters. All had Blackstone oil analysis done, and all passed every time with flying colors.

5k with Rotella T6.

20 years driving modified STIs with zero issues.

Rotella T6 now comes in 10w-30 as well as a 5w-40 both are excellent choices.

I'll always use T6 because it's cheap, available, and damn good oil

The interesting part is that the T6 was used to tow a camper from Indiana to the Oregon coast where we are now. It’s interesting to see the viscosity, flashpoint and Moly are higher in the T6 even after towing through the mountains and more miles on the change.

I wouldn’t go with 0W20. Most people thicken the oil up in these when they start getting excessive oil burning. Lots of folks running Rotella 5W40. I ran it for years before I got tired of paying the premium price.

I run rotella t6 5w-40, and she loves it

Rotella T6 5w40 in my EJ255, its helped a tad with the leaking until I can get everything apart to seal it all up again.

I tried Rotella when I first had my truck but it kept smelling like it was burning so I went to Valvoline Full Synthetic since it’s certified for Cummins.