VOA of amsoil euro 0w40 EFO

[fantastic]

It's interesting that some of the newer European oils are doing away with esters, at least per virgin analysis. Any reason for this? I've seen it mentioned in patents of using "cleaning booster", whatever that is..... Mobil 1 ESP 5w30, as well as all Mobil 1 Triple grades including FS 0w40 now have a virgin oxidation of <10.

If you look at some of the highest priced oils on the market they usually have a group V common denominator (POE/AN/Diester).

I wonder if esters are being replaced with newer additives.

Young adds: "Some elements of the chemical composition of our new engine oil are a departure from what we would normally formulate a product with.

"What was a long shot a few years ago - a vision of a low ash, high temperature, low friction engine oil that incorporates bio-based components became a reality this year, thanks to the efforts of our whole team, in collaboration with Honda and Red Bull.

From your comments I'm thinking it's something in this "bio" product that is cheaper to make but performs just as well as esters but no longer shows up as a higher oxidation value. Just shooting from the hip...maybe plant or animal based?

 

[Jw95]

Curious about test results in ls applications to see how it would compare to other amsoil products. I’ll get to it eventually. Trying to use up all the Valvoline premium blue RESTORE I have. Just started its second oci. 1 more to go.

 

[lakestone]

Esters are made by reacting acid with alcohol. Alcohols have oxygen in them and the oxygen is also in esters. It’s incorrect to think of alcohol and the ester that gets created as being oxidized, in the same way as an ester that gets oxidized naturally later in its life. The oxidation test detects the oxygen in the ester. The change in the oxidation result from VOA to UOA is what matters, since that truly does indicate how much unwanted oxidation has occurred.

Well, if it's already reacted when the oil is made, will it react again?

 

[JAG]

Well, if it's already reacted when the oil is made, will it react again?

I’m not sure what reaction you are referring to. Esters in a lubricant can react with other atoms/molecules present to become different chemicals. Two of those reactions are oxidation and hydrolysis.
https://en.m.wikipedia.org/wiki/Ester_hydrolysis
https://www.sciencedirect.com/science/article/abs/pii/S0301679X13000431

 

[FoxProTwisty]

Interesting how the TBN came in at 9.6. I thought in order to meet ACEA A3/B4 the minimum would have to be 10?

 

[Kasyn]

The ACEA requires measurement according to ASTM D2896. Under D4739, the values are characteristically lower.

 

[doverlabs]

Here is a voa of amsoil euro 0w40. Still waiting on other voa samples to get back to me.
View attachment 263513

This is a new formulation. My test from last year has zero moly, lower calcium and zn/p.

 

[53' Stude]

This is a new formulation. My test from last year has zero moly, lower calcium and zn/p.

I was gonna grab a quart of this today while at Rural King, but $17.99 is out of the budget

 

[Jetronic]

Esters are made by reacting acid with alcohol. Alcohols have oxygen in them and the oxygen is also in esters. It’s incorrect to think of alcohol and the ester that gets created as being oxidized, in the same way as an ester that gets oxidized naturally later in its life. The oxidation test detects the oxygen in the ester. The change in the oxidation result from VOA to UOA is what matters, since that truly does indicate how much unwanted oxidation has occurred.

And to add, since esters are in effect pre-oxidised, they show little interest in oxidising further. It happens, but slower than typical for mineral oils.

 

[Jw95]

I was gonna grab a quart of this today while at Rural King, but $17.99 is out of the budget

Yeah amsoil doesn’t even charge that. 25% off when you become a preferred customer. That definitely saved me a lot of money.

 

[buster]

I think I would take the chance and run the SS 0w40 over this.

 

[doverlabs]

I think I would take the chance and run the SS 0w40 over this.

This is exactly what I’m doing with the VW wagon.