Oil Report from Blackstone Labs
RL Community Team
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I use it in my 19 C4GTS. I’m not impressed with M1 0W40 at all. After seeing a VOA, I’m surprised that it hasn’t been improved. 5W50 is better for me and my logic is if it breaks down to a 40 weight, I’m OK with that.
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I was thinking the same. I’m in NC and the temperatures are super hot here. I’ve used Mobil-1 5W40 in the 2019 GTS and have also tried Mobil-1 0W40 ESP X4. Mobil-1 5W50 had been a great oil for the Cayman but I wasn’t sure if I could use it in the/ 911. Didn’t see why I couldn’t just it wasn’t listed in the operators manual. I think I’ll switch next oil change. Thx
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