0W20 List of long drain motor oils

[Triple_Se7en]

Edge Gold > Black Edge clearly, in OCI trials I've done.
I would have purchased the Supercar Overkill oil, had it been SP instead of SL.

Also, not sure which EP brand name you're referring to.

 

[tblt44]

The Castrol EP is the gold bottle, I probably try Valvoline EP 0W20 or stick to Penzoil Platinum. The oils I used have been Napa Full Synthetic, Quaker State Ultimate Protection and the current oil change is Penzoil Ultra Platinum.

What I notice using Quaker State is the oil turn a darker brown around 3,000 miles, Penzoil Platinum and ultra Platinum the oil still have a golden honey color throughout the change interval.

Darker I'mn 3k miles means it's cleaning