Mobil 1 Extended Performance

[SammyChevelleTypeS3]

From what I read the noack of those EP oils from most brands are lower, and they use base that resist oxidation better, and of course higher TBN. My guess is the EP oils can go past 15K by a bit, and the regular syn can go past 10K by quite a bit in reality (i.e. 12.5K) for the same test condition.

What is the real effect (anyone?) of the higher NOACK or is it really so low it does nothing? I often wonder with higher NOACK would that make it easier for the valves of the GDI engines to get more fouled up with deposits? I wonder if anyone here has experienced the dirty valves to the point of having to get the heads pulled to clean them? So far have not seen anyone mention this yet. Maybe a good thing.

 

[spj]

How do you get that it’s “at least” 50%?

An MSDS is not a recipe even at the biggest stretch.

And what are your sources? They just randomly break down a bunch of percentages for fun? It is clear before they listed group 3 at around 40% or so and left the rest blank. If that is the case, how did folks come to a consensus the old version of M1 0W20 EP was a majority PAO if not by the MSDS?

 

[SammyChevelleTypeS3]

I am one too. I often find myself cruising the BITOG OPs and forget to check the dates. I am certain I have posted to people who are long gone . Oh well. Glad there is no $ fine for that foolishness.

 

[SubieRubyRoo]

And what are your sources? They just randomly break down a bunch of percentages for fun? It is clear before they listed group 3 at around 40% or so and left the rest blank. If that is the case, how did folks come to a consensus the old version of M1 0W20 EP was a majority PAO if not by the MSDS?

Mmkay. Do you even know what the purpose of an SDS is? It’s not there to disclose trade secrets, bub. It’s there to help people deal with the EHS implications of a product.

 

[The Lube Guy]

What makes Mobil 1 Extended Performance motor oil suitable for extended drain intervals is the addition of extra antioxidants compared to the standard version. The base oil, as long as it's a high-quality Group III+ HVHI or better, is sufficient for blending a long drain interval motor oil.

 

[spj]

Mmkay. Do you even know what the purpose of an SDS is? It’s not there to disclose trade secrets, bub. It’s there to help people deal with the EHS implications of a product.

Uh yea I do and am sitting next to a Chem E who I"ve been married to for 24 years to include dealing with hazmat. Get over yourself.

 

[PandaBear]

What is the real effect (anyone?) of the higher NOACK or is it really so low it does nothing? I often wonder with higher NOACK would that make it easier for the valves of the GDI engines to get more fouled up with deposits? I wonder if anyone here has experienced the dirty valves to the point of having to get the heads pulled to clean them? So far have not seen anyone mention this yet. Maybe a good thing.

My understanding is it may cause oil burn / thickening, deposit, maybe knock. Those evaporated oil has to go somewhere so they ended up where they can't be washed away.

 

[buster]

What is the real effect (anyone?) of the higher NOACK or is it really so low it does nothing? I often wonder with higher NOACK would that make it easier for the valves of the GDI engines to get more fouled up with deposits? I wonder if anyone here has experienced the dirty valves to the point of having to get the heads pulled to clean them? So far have not seen anyone mention this yet. Maybe a good thing.

In theory it's supposed to help reduce intake valve deposits but in many engines, it doesn't seem to matter.

 

[SammyChevelleTypeS3]

My understanding is it may cause oil burn / thickening, deposit, maybe knock. Those evaporated oil has to go somewhere so they ended up where they can't be washed away.

That is some of what I expected could be a cause. The thing is no one specifies what is a really bad NOACK number because all oils show values.

 

[SammyChevelleTypeS3]

Funny what can be found searching all about on BITOG: I found this from back in 2018 talk about NOACK. Pretty much what I expected.

There is fairly strong evidence that a higher NOACK percentage helps accelerate/exacerbate back of intake valve deposit buildup on GDI engines, turbo/boosted GDIs even more so (unless they also have a secondary port injection system in conjunction with the DI, like the current Mustang 5.0 Coyote does).

 

[M56959]

Bickering over obsolete numbers in a two year old topic wastes everyone's time.