Mobil 1 does well in lab tests. Never heard of Kendall. I'd stick with the brands well known and tested to be good like Mobil 1. Or otherwise go through the trouble of digging up the Kendall lab tests and compare, or find some car nut who has already done this for you.

Mobil is supposedly POA base stock and Kendall is supposedly severely hydrocracked and hydroisomerized. There isn't a nats worth of difference between those two base stocks. So it comes down to whose additive packages you trust more. No oil company will disclose their additives, so you're left to believe myths, legends, and testimonials. What you'll get here is conjecture and opinion, not facts. Buy what's on sale. They're both GF-5 rated.

Hi some oils mix well however some don't they combine to produce a sticky gung. so stick with what ever you have used in the past. the gung can lead to a seized engine as gung does not lubricate.

You get what you pay for, buy the highest priced motor oil.

both the same and no better at all than "regular" motor oil..............ALL motor oil must pass the same Grade inspections by the Government, and sine oil is changed often enough, there's no need to spend 2X the price