Engine oil Mobil or AMSOIL

Amsoil did pretty good, it beat out everyone else from that project farm oil series.

I use Amsoil 0W-20 508/509.

Mobil 1 is one of the better, but you could use any 0w-20. I'd just say stick with a name brand and not something from a gas station.

mobil 1 high mileage synthetic has been good to me.

I would love it if the whole world moved away from fossil fuels and completely to renewable energy resources. Myself included. However, for many practical reasons I currently own a vehicle with an internal combustion engine, and when it needs an oil change I change the oil myself. So what oil do I buy? I buy Mobil1.

We exclusively use Mobil 1 (varying grades and viscosities) per the MFR spec and changing it at the MFR spec mileage (or time, during covid). Never any issues noted. 1985 BMW K100RS (122k miles), 2003 Boxster (177k miles), 2012 Acadia (98k miles), 2013 Jetta SEL (105k miles).

In a pinch, I used Mobil 1.

Mobil 1 0w-40

I run Amsoil in both of mine. Also use all their gear oil and transmission fluid

I'm currently happy with Mobil 1, 15w50, except when it comes time to pay for it, yikes that stuff is pricey. First time I ran the Mobil 1, guess what happened?? Oil light flicker at hot idle. Replaced the low pressure switch, no more flicker. That switch didn't change characteristics just because I changed oil, the fresh oil was thinner, oil pressure decreased.