I'm apparently the least informed person here (never done an oil analysis), but FWIW I seem to be fine with Mobil-1 0w40 on a 996.2 with 208k miles.
Mobil 1 5w50. Temperate climate. Car always garaged. Annual changes at 4000 miles. Zero top ups required.
I run 5w30 in my 17 tundra, 16 Corolla and soon my 23 4Runner. My Tundra was noticeably quieter after the switch. The Corolla was quieter, but the change was not as dramatic as the 5.7 V8 in the tundra.
I use Pennzoil Ultra Platinum because it is GF-6A and API SP full synthetic motor oil which are the latest and greatest standards.
I use PENNZOIL PLATINUM but brand is up to you !
Pennzoil ultra premium is the best overall considering price, pennzoil euro is even better if they make it in your w-viscosity rating.
amsoil is the best period but is also expensive. recommended for commercial driving where you run your car to the limit racking up hundreds of miles per drive.
A lot of old guys recommend mobil 1. Mobil 1 loses to even walmart supertech, amazon basics oil, valvoline, etc. in the wear metal tests so that's my reason for avoiding that one
I use Mobil in my economy cars but Valvoline in my drift car , either oil is perfectly fine tho tbh
I always get the cheapest oil with the correct specifications. I use that mobil1 in my hybrid Camry. Works great.
I have ran mobil 1 0w-40 for a long time without issue but am thinking of switching to thicker this change as it's starting to leak out one of the oil seals into compressor housing.
I'm running Amsoil 5w40 or Castrol Syntec 5w40. I ran Mobil1 10W30 a few times and I heard too much valve noise. When I opened the oil cap after driving around on the freeway it was smoking..which I'm not all that happy about. So I stopped using this oil.
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