650WHP 2018 Audi S5 Oil Recommendation?

[SubieRubyRoo]

Thank you verymuch for sharing that. I have to say this very puzzling for me. His findings are definitely against my apriori, and even though his testing method is not perfect, it is very sensible, and empirically looks reliable enough since he is also testing against a known reference sample.

The thing that does not make sense to me is, the previous formulation they used had a noack that is half of what JAG is calculating here. Just the sanity check wise, it really does sound wrong to me that their noack doubled moving from a racing focused formulation to a street friendly formulation. Espeically also given that they emphasize this formula being catalytic converter friendly, there must be something we are missing here. But given this, if I were the OP, I would definitely go with HPL supercar over 300V. Especially also considering they cost pretty much the same

Not everything that evaporates goes directly out the exhaust. If you search for my catch can testing on HPL on my EcoBoost, we found that parts of the entire oil (even on an oil as good as HPL) all end up making their way thru the PCV system as well. Even parts of the base oil, which are generally much less volatile than the add pack. Even Dave was surprised at the results.

 

[altaylar]

Not everything that evaporates goes directly out the exhaust. If you search for my catch can testing on HPL on my EcoBoost, we found that parts of the entire oil (even on an oil as good as HPL) all end up making their way thru the PCV system as well. Even parts of the base oil, which are generally much less volatile than the add pack. Even Dave was surprised at the results.

I am not sure where I claimed otherwise. I was being ostracized for theoretizing that what many finds as Valvoline Restore and Protect caused oil consumption was a strategic base oil selection to deliver material to where the liquid form does not reach easily.

 

[edyvw]

I don't think i have ever seen an oil bottle saying the oil is street friendly, no matter the brand/product line.

But Motul's tech advisor was very clear to me that they would target 3 to 5 thousand miles with dual use

That is catching someone over the beer and what official recommendation is:

If you argue with them over deposits tgey will say: this is racing oil designed for circuit etc.
But, unofficially you can get away with it.
But why would you use something you can get away with on the street, when pretty much any Porsche A40 oil will do excellent on tge street, as designed, and well on ocassional track day? Motul engineers are the ones that actually preached that: occasional track day, use street oil.

 

[SubieRubyRoo]

I am not sure where I claimed otherwise. I was being ostracized for theoretizing that what many finds as Valvoline Restore and Protect caused oil consumption was a strategic base oil selection to deliver material to where the liquid form does not reach easily.

It was my interpretation of your choice of wording here….

Espeically also given that they emphasize this formula being catalytic converter friendly, there must be something we are missing here

Mentioning the cat specifically surely implies all the evaporation is leaving via exhaust. But that really doesn’t matter and wasn’t me “calling you out” on it since we’ve all seen oil burners go a long, long time before failure. I was just adding an anecdote that there’s other routes where weird things contrary to “accepted self-proclaimed experts” are on record for believing oil vapors go.

 

[chris719]

I have to say this is one time I will disagree slightly with Edy. Tuning is on the bottle and I’d have no concerns with 3k-4k oci on 300V on the street. The new formula is quite tame looking even if Noack is high. The Noack is still lower than low end oils that people use. Levels of additive not higher than some HPL or Red Line oils.

 

[scrllock]

I have to say this is one time I will disagree slightly with Edy.

Even Edy disagrees with Edy. "Not street oil" and "I ran this on the street with excellent UOA" within a few posts of each other.

 

[svenson]

Even Edy disagrees with Edy. "Not street oil" and "I ran this on the street with excellent UOA" within a few posts of each other.

had a long dialogue with him about this ..but i understand his point. i would do that test too if i had 300v for free.

 

[edyvw]

Even Edy disagrees with Edy. "Not street oil" and "I ran this on the street with excellent UOA" within a few posts of each other.

Well, UOA doesn’t show everything, especially cheap oil analysis.

 

[MBBW]

300V is racing oil. It is not suitable for street driving.

Ya, but it'll make the honey-do list feel like Le Mans.