Yes, Valvoline Premium Blue Restore uses the same CK-4 additive package in regular Valvoline Premium Blue but with a base oil composed of 62.5% POE, 25.0% PAO, and 12.5% AN. It's meant to be used for a single 5,000-mile OCI every 100,000 miles in HDEO engines to clean the piston-ring carbon deposits as maintenance to restore horsepower and fuel economy.
Originally Posted by aquariuscsm
That Valvoline stuff sounds like a serious motor oil! I don't think I've ever seen it before.
Yes, it is. They are especially good at figuring out the base stocks and additives (such as the type and brand of the moly used) using FTIR.
Originally Posted by nascarnation
Is this sort of the Russia version of BITOG?
Absolutely. However, the amount of ester-like additives are below 1% and they don't increase the oxidation number much. You can consider it as an upper bound on the ester base oil used. I also give an approximate range, for example, about 5 - 7% POE for Euro Mobil 1 oils (FS and ESP) according to the FTIR oxidation numbers around 35%. Non-Euro Mobil 1 oils have oxidation numbers less than 10%, which is not different than for other oils. (Earlier, I remembered the numbers incorrectly and stated them erroneously as 5 - 15%. The actual ester percentage in M1 FS and ESP should be around 5 - 7%.)
Originally Posted by MolaKule
But oxidation numbers aren't always indicative of base oil esters by volume or percentage since many additives have oxygen linkages. Many additive components are also esterified so trying to determine the amount of say, Esterex TMP ester(s) would be rather difficult without additional C-NMR or H-NMR analysis.
I think you may be right that in their Euro formulations, they are prioritizing cleaning, probably because of the TDI diesel-engine tests. From what I've read, POE is one of the most expensive base stocks and given that it fights other additives to increase wear and reduce fuel economy and it's not as effective in fighting oil oxidation as the AN, why bother with it and not use AN instead unless cleaning is the top priority?
Originally Posted by buster
Thanks for sharing this Gokhan. I need to read up on AN's a bit more. I've been reading articles here and there on them. I'm not sure how much of what XOM is saying about AN's offering better performance than POE's is true or not. Based on what XOM is showing, AN's offer great performance attributes. I know the ESP line and 0w40FS/ESP are probably their top tier oils, overall. I've always found it interesting that the PDS for the 0w40 stated exceptional cleaning power and good for cleaning dirty engines. I assume this is due to the POE in the oil.
Just as I replied to buster, I think their Euro oils (FS and ESP) may be prioritizing TDI diesel-engine cleaning over wear protection, fuel economy, and oxidation stability. Interestingly, the PAO-based Amsoil Signature Series has a lot of POE ester -- around 10 - 15% -- but no AN. The PAO-based Ravenol doesn't seem to have any POE ester or AN.
Originally Posted by JAG
I wish we could hear from XOM's formulators why a few Mobil 1 oils use a small but significant amount of ester when they have so frequently made documents like Gokhan displayed above, singing the praises of AN completely at the expense of esters. What I mean is that if ANs are that superior to esters according to them, why do a few of their oils use them? XOM has been making documents like that for many many years. I recollect them to have started making such documents in the early 2000s.