Amsoil Vs Mobil 1

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@oilman

I try to read a lot about oil. I believe Royal Purple and Amsoil are group IV oil base which is 100% synthetic and Mobil 1 is group III I believe. Check it out. I was going to buy RP for my Rav 4 (63K miles) but a lot of articles said unless it’s a performance car, going with any name brand synthetic (mobil, pennzoil, castrol, etc…) is good enough if you change it at the required interval. I change mine between 2 and 3K to do something on the car. You can buy amsoil or RP but you’re spending money that you don’t need to (yeah, I change way too fast and waste money too). FWIW

Yes - and I would use AMS if I am driving 10k or more in a year. So I can stick with once a year oil change. This is what Uber drivers doing as per the video I posted.

If you are using Full Syn, 2-3k is too soon. 5k seems what most people do.