but real talk: Castrol GTX Synthetic 10w40 in Tennessee summers and 5w40 in winter.
Owner reviews for engine oil
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5W30 Castrol edge full synthetic
Motul 8100 5w-30
Castrol Syntec 5W-30, because of this: [https://my350z.com/forum/engine-and-drivetrain/258663-vq-oil-analysis-and-info.html](https://my350z.com/forum/engine-and-drivetrain/258663-vq-oil-analysis-and-info.html)
Between it and the Castrol Syntec 0W-30 it has less wear indicators in the oil than any other brand, at any other weight.
Pros: less wear indicators
Redline and motul are the best but I’ve been running catrol for 50k+.
Mileage: 50000 km
Fuchs Titan 5w30
Motul 8100 5W40 (track toy)
Currently running it in my B7 S4 with no problems.
Pros: no problems
Vehicle:
Audi S4
Mobil 1 since day one (first oil change). 5w-30 (as per vehicle spec). 316k+ original owner miles. Virtually no carbon or varnish.
Pros: no carbon or varnish
Mileage: 505600 km
I went through a lot of different oils in my old highly modified WRX, found this to run this to run the smoothest also no metal dust when I drain the oil on the magnetic sump plug.
Pros: run the smoothest
Cons: metal dust before
Vehicle:
Subaru
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