Originally Posted by Infamous///M5
What about royal purple ?
They aren't BMW approved. Neither is AMSOIL.
If you want that sort of thing, you should get Pennzoil Platinum 5W-30 european blend. Bob the oil guy uses it.
The thing that bothers me about Castrol Edge is I have read multiple reviews saying it is a dirty oil. There is also a video on youtube comparing it to BMW Oil and the BMW oil seems cleaner. This a concern in an engine known to burn oil. You want an oil which produces little ash.
2014 ///M5 Individual Frozen Grey, Silverstone Full Merino, Piano Black, Exec Pkg, Drivers assistance plus, LED Pkg, Bang and Olufsen, 20" 343M Forged Alloy Wheels
Countermeasures: Bel StiR+, Laser Interceptor Quad HP, Zaon MRX
Upgrades: Eisenmann Sport with M Performance tips, Dinan anti-roll bars