I've used Mobil1 5W20 since we got our '08 new. It now has 30K and all is well. Almost time for it again before the winter begins. This time I'm thinking of trying Mobil 1 0W20 Advanced Fuel Economy to see if there's any improvement(skeptical).
I've been using Mobil 1 5W40 in the Dodge HD/Cummins and likely will continue its use.
The boutique oils are just overpriced imo. That includes RP, Redline and Amsoil. Mobil1 can be had right now for $21 for a 5 quart jug at Chinamart. That's $4.20 a quart. The others can't come close to that price.
If Castrol Edge had a 5W20 I might give it a shot, but they don't.
I know but in the E it is the best I've tryed. I guess we are all just lucky that the E is a cheap date. $21 dollers for a jug at walmart and not sure if it still on the pennzoil site but there was a $10 mail in rebate. Also if you do try the edge that is $26 for a jug and they have a $10 mail in rebate on the castrol site for that as well.Thanks for the info on the Edge. Platinum is all that? It's not even a true synthetic.
WOW, you should look at the rebate because if you bought it in quart botttles I think the rebate was $15 so that would be $10 for a synthetic oil change! Crazy.Advanced Auto Parts has a special this month on Edge and Syntec. 5 quarts of either oil and a Pure One filter for $24.99. Not bad, huh?
I've been using synthetic oil for years, and the only real problem, as noted in that article, was w/the gasket seals, but that was w/the seals that where once used, and not with what is being used now-a-days. Don't get me wrong, the oil wasn't exactly gushing out either. I never had to add any oil between changes, but I did have to wash the engine down once in a while. Anyway, this isn't an issue anymore w/todays engines.