Chemistry of overly potent "engine restore" deposit control products
- Thread starter Racer USA
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solvent?
Valvoline Premium Blue Restore was formulated with a base oil comprised of about 50% Group V (POE and AN?) that would clean very aggressively. This oil does not share the same chemistry as Valvoline Restore and Protect.
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Esters, Alkylated Naphthalene, Naphthenic oils, Pretty much group v base stocks with a low aniline point. You don't want to go too low before it starts to damage elastomers in your engine so fully formulated oils have a limit dosage of these base oils to have compatibility.
https://www.kalsi.com/handbook/B01_Elastomer_Selection_Considerations.pdf
https://www.kalsi.com/handbook/B01_Elastomer_Selection_Considerations.pdf
#4 is Valvoline Premium Blue "Restore",
very much different from their new "Restore & Protect" product.
I always wondered about these cleaning stuff being seal friendly more than having to change the filter. That's why I've been hesitant to use any. Not that I need them since my OCIs are very reasonable or even on the short side.
iirc, SonOfJoe used to say higher Grp oil can also be unfriendly or harsh on seals if not formulated properly.
I guess since Grp II & III are fashionable again, we don't have to worry.
iirc, SonOfJoe used to say higher Grp oil can also be unfriendly or harsh on seals if not formulated properly.
I guess since Grp II & III are fashionable again, we don't have to worry.
The POE in formulation 4 above (Priolube 1973) has very low polarity compared to most esters used as co-bases in motor oils. As measured by the Non-Polarity Index, a calculation based on the number of carbons, ester linkages, and molecular weight, Priolube 1973 calculates to 130 compared to 58 for one of the most popular POEs used in motor oils, TMP C8C10. The higher the NPI, the lower the polarity. When countered by the 20% PAO in the blend, I would not expect a seal incompatibility problem with the this formulation, and I'm sure Valvoline did the appropriate seal testing.
MolaKule
Staff member
Why would you want a novel formulation that would clog pickup screens and filters on a sludged engine?
I think PandaBear answered your question, that is, a high dosage of selected solvents.
What is your chemistry background?
I don't think anyone will give you a list of chemicals on a public forum or in private due to the toxicities of those chemicals and the proper handing of same.
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And you’re on an Internet board looking for formulations?
MolaKule
Staff member
"What is your chemistry background?"
MolaKule
Staff member
On Jul 20, 2022 we had a PM discussion on a kart racing lubricant formulation and I responded I only work under contract and I would not produce a formulation without a contract. So now you attempt to illicit a formulation using a backdoor approach. Pretty sneaky but it won't work.
Don't try this again.
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