We run LiquiMoly 5W-40 in all of them. UOA testing of heavily modded cars shows significantly less wear on engines running LL-01 oils vs the LL-14FE piss water.
Mopar oil filter, amsoil 0w20, don’t over torque filter housing.
Was using motorcraft, switched over to Amsoil. Cost is the same maybe a couple dollars more.
Switching from Mobil 1 to Liqui Moly pretty much solved the burnout issue for me.
I go for liqui Molly 5w-30 4200 top tec for my r55 mini Cooper D
I personally run Amsoil and always have. I think they make a great product and their customer service is solid.
AMSoil signature series. Best stuff you can get!
I've used Mobil 1 in all my vehicles before this car. I have chosen Amsoil Signature Series for the WRX.
I run Leichtlauf 5W-40 on my B7 A4 2.0T; just hit \~250K km. Used to run Castrol and Motul but as I started doing my own oil changes, switched to the LiquiMoly stuff. Oil consumption issues gone, no complaints from me.
My 3.0T doesn't seem to care one way or another what gets put into, it all seems to act similar. I have liqui moly molygen 5w40 in it now because...My 5.2 absolutely hates Mobil 1, Castrol Edge and Valvoline Syntec. Burn off/deposit rate of liquid moly molygen or leichtlauf seems to be about half of the other 3 I've tried, so I'm just going to stick with that until I see a reason to change.
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