axmonkey

I'm trying to find oil with low ash content.

From what I am seeing Mobile 1 ESP 5w30 should fit the bill. Am I missing anything?
https://mobiloil.com/en/motor-oils/mobil-1/mobil-1-esp

I've seen mention of European versions. This AMSOIL ESP seems to fit that but doesn't specifically call out low ash.
AMSOIL European Car Formula 5W-30 Improved ESP Synthetic Motor Oil

Mr. Powell recommends "low ash" oil but I haven't seen him recommend anything specific, I like to know what he's using.

I'm pulling the intake this summer and walnut blasting, and going to pick up Mr. Powell's PCV system. I've been keeping the RPM's up and using 93 octane to minimize the coking but I want to make sure I'm running the right oil too.

cluelessk

Don't worry about it.

Coking will happen no matter what.

umrdyldo

iTrader: (1)

Cool an oil discussion. ESP is great if you can find it.

Otherwise Mobil 1 Extended Performance is good enough.

As said you won't prevent coking.

califcarm

I think you can be sure you have the right oil properties (low ash, and all others required for the LNF) if you use one with GM4718M approval. It is on normal Mobil1 5w-30 that can be had cheap at Walmart (it's on the back label).

The ESP does not have that approval, so while I agree that I think it is low ash, I am not sure it meets the other requirements.

https://mobiloil.com/en/motor-oils/m.../mobil-1#5W-30

axmonkey

Crap, nice catch on the GM spec...

cluelessk

GM4718M is about heat management without an oil cooler.

Many oils meet the requirement but don't have official accreditation due to the costs involved for the relatively few cars that require it.

califcarm

Agreed. I have always preferred M1 0w-40 for my other 2 liter turbo applications as it has much better viscosity at higher temps and has a better base stock oil than the other "standard" M1 oils like the 5w-30 that the LNF calls for. But those were all port injected so low ash was not important.

For the LNF, I am sure there are a long list of oils that would work fine as long as they are low ash (even if they don't have the GM cert). But I will stick to M1 5w-30 because I just daily drive my car. But if I did track it, I would probably be looking at a better oil for that purpose.

umrdyldo

iTrader: (1)

I thought i remember specifically Powell telling us that the Mobil 1 Extended Performance had the best additive pack. And yes you can run 0w30 without issue for a little better gas mileage.

Powell recommended changing at no later than 30% on the DIC as well.