Mobil 1. It’s amsoil without the outrageous cost.
Always Mobil1
Switched to Amsoil awhile back and have no regrets.
Amsoil Signature series 5w30 is one of the best oils you can get that meets the oil specifications
M44 1.9, Mobil 1 Super 10W40, though I have to admit I use Castrol Edge in everything usually.
If you want oil that has zinc, close to the oe oil weight, and is really good I'd go with ams oil, it is expensive but after 3k miles mine is still really clean
I really like Mobil 1 0w40 European car formula, and for the filter, only OEM from the dealer.
I once used the 20k mile oil, but changed it at 12k; my engine seemed to run nore smoothly, after that. I swore off longer oil change intervals and went back to regular Mobil 1.
It is good oil! The only recommendation for C5 Corvette's and other cars.
I have been using AMSoil for years and did the once a year/25k miles oil change for years and and my engines have had zero issues.
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