I have an old 91 corolla that burns oil. A friend suggested I switch to 20W50 oil. Will this help in terms of oil burn, engine wear, or gas mileage? How is this oil different from whatever Jiffy Lube usually gives me.

20W50 motor oil

MikeInNH October 29, 2007, 5:23pm 11

you could try a dyno 10w50.

Who makes a 10w50?? Never seen it. I’ve seen 5w50 - synthetic by Castrol…but NEVER seen anything near that range as a dyno oil.