Should oil brand matter so long as specs are met?

[ARB1977]

Although I don’t have my 2015 Tacoma with 137K anymore due to hail damage. I sure hope using Amsoil XL kept the ring packs just as clean as the timing chain. Didn’t burn a drop, oci was 5500-6500 miles.

 

[tired]

"Proof" is a nebulous concept, I guess. How many anecdotes are required before they become proof?

I guess like beauty—it's in the eye of the beholder.

Personally I've seen enough. It's very low cost to go from Supertech to VRP. Worth it to me to not run the experiment again that so many have already run before and ended up with coked up piston rings and oil burning. Even going to a boutique oil is like 3% of the total cost of ownership of a car.

 

[Bwalker]

Although I don’t have my 2015 Tacoma with 137K anymore due to hail damage. I sure hope using Amsoil XL kept the ring packs just as clean as the timing chain. Didn’t burn a drop, oci was 5500-6500 miles.

View attachment 346832

View attachment 346832

Mine looks similar. 10k changes with mobil 1 ep.

 

[tired]

Mine looks similar. 10k changes with mobil 1 ep.

Can you post a photo?

 

[FlyingTexan]

Every engine needs a spec so they put one on it but they seem to be rather useless IMHO. My Jeep Grand Cherokee Ecodiesel, 6.2L GMC, and LandRover Discovery TD5 all ended up having large changes to their initial specs and generally all for the same reason. They were trying to run thinner oils for higher mpg numbers. Whether or not an oil goes through the spec process doesn't really matter to me. I'll never doubt RedLine 5w30 can handle a B58. We ran Rotella T6 in absolutely everything from ATVs to diesels to my mother's Subaru to my Yamaha 225 SHO tuned outboard. Now I run Molygen in everything except a duramax because it's quality and I use FCP for it.