Engine oil Shell or OEM Honda

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.

Honda HP4S.

One must change the oil by 8.5k kms, due to constant thermo heat cycle, its addictive pack gets broken down, oil gets dirty.

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

Ive used T6 with good results. The major drawback with T6 is foaming, it's less than great in that regards.

Genuine except sa engine oil. Bili ka na lng ng fully synthetic or synthetic blend na API SN. Ampanget sobra ng honda oil.