Engine oil Shell or Motorcraft
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
10w30 Rotella will cut your oil consumption by 70-80%, ran it in my last Subaru until the clutch went at 234k and running it in my current Subaru
Change the oil with Rotella T6 oil.
Rotella T6 5w-40. No difference in fuel mileage or anything.
I run the diesel Rotella T6 5w-40. My catalytic converter decided to start throwing P0420 codes around 58k miles and I spoke to a shop that I am going to have tune my car and one of the techs said that they reformulated T6 a few years ago and it has more zinc in it than it used to and that might have had an effect on my cat and it's early demise.
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