Stay away from rotella conventional. I’ve heard and now as well personally have had a turbo grenade due to their oil quality, that’s the conventional anyways.
Cons: turbo grenade
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These days I do use T6 because I know the winters in south Texas aren't cold enough to worry about running anything lighter.
Pros: good for warmer winters
People like rotella because it’s a high zinc oil and subarus just like high zinc.
Pros: high zinc content
Vehicle:
Subaru
I run the Rottela 15w40 in my stock 05 Subaru Legacy GT (EJ255) and my mk4 supra turbo. Haven't had issues with the cats on the Subie, I do plan to remove them tho
Pros: no issues with cats
Vehicle:
Subaru Legacy
Rotella 15W-40. I put that shit in everything. My Yukon, my Fit, and all 3 motorcycles. It’s legit.
Pros: It’s legit
We used to commonly use Rotella in our heavily modified Mazdaspeed 3/6's to combat the same issue. It worked great and the only problem we ever had was with what we called the "black death".
Pros: worked great
Cons: black sticky residue
Vehicle:
Mazda
Rotella T6 5W40
Vehicle:
Subaru
Nothing wrong with LiquiMoly, but I personally find Shell Rotella T6 to be better. It is quite a bit cheaper as well.
Pros: nothing wrong
Cons: Shell Rotella better
Vehicle:
Volkswagen
I run Rotella T6 5w-40 full syn Heavy duty Diesel engine oil in all my small engines with good results. Scooter, ATV, lawn mower, Honda car, and my F350.
Pros: good results, typical wear
Vehicle:
Honda
RotellaT and Wix. Since my first turbo in 2007.
Vehicle:
Volkswagen
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