Which NO-VII Oil would you recommend?

[SubieRubyRoo]

Is this an issue, double the oxidation limit?

No. Like mentioned, the virgin oxidation due to esters is much higher and must be subtracted from the final result. The net change between virgin & used oxidation is what should be evaluated against their limit.

A start of 40 and end of 51 is only 11 and not a concern. If you used WM shelf oil with no esters and got a result of 51, your oxidation would likely be 40-48 which yes, would be really bad.

This is really the only reason to have VOAs done; you get a baseline of elements so if something wonky shows up on the UOA one can determine how much “skew” there is due to the oil itself.

 

[Triple_Se7en]

I don’t understand the appeal of the 10W oils in this family when the 5W are shear stable and have excellent specs all around. There’s not really a sizeable HTHS bump either like mainstream oils tend to have.

If you owned a Hyunkia-made four cylinder between 2012-2020, then it make more sense. They run better - sound better and use less or no oil with 10w30+0w40. I've had mixed sound results using 5w40 and poor sound results using 0w30.

Every owners engine has a sweet spot for what it likes and a sour spot with either an oil brand or it's single viscosity recommended. Hyunkias make perfect test models. They will tell you what's good or bad under the hood...... even indifferent signs, meaning they run / sound the same on anything.

My Hyundai is that way. Nothing I've used displeases it. Our Kia is just the opposite. One's an angel - other the devil.

 

[SubieRubyRoo]

If you owned a Hyunkia-made four cylinder between 2012-2020, then it make more sense. They run better - sound better and use less or no oil with 10w30+0w40. I've had mixed sound results using 5w40 and poor sound results using 0w30.

Again, just run the 10w30. Guarantee there’s no statistically significant measurable differences vs playing backyard mixer but at least you’ll know exactly what’s in your crankcase.

 

[OVERKILL]

One of the base oils that’s used starts off at 9.5cSt@100*C has a Noack of only 2.2%. The pour point makes it a 10w at best (I’m not sure if PPDs would be beneficial or even warranted unless shooting for a 5w) but that’s a pretty amazing result. The additives will likely have a higher Noack and therefore the final product will be slightly higher than indicated here.

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My understanding is that PPD's only affect the propensity for wax crystal formation. In the absence of wax in which the crystals can form, they wouldn't further push down pour point and improve the Winter grade.

 

[gfh77665]

The OP specifically expressed a concern about cold starts in Colorado. He even specified the town.

The recommendations that ignore that specifically-expressed consideration fail to answer the original question.

You are exactly right. That has happened to me (and pretty much everyone else here), oh, about 1000 times. Funny no one ever spoke up about it all along the way, but I am on the other side of it this in this instance and its called out. Go figure.

 

[userfriendly]

I picked NO-VII because of the Dexos1 gen3 rating for my GM 5.3 pickup.
Wintertime Colorado high mountain conditions.
I asked HPL using their website contact inquiry form but never received a response.

Dexos1 gen3 comes in two grades, 0W20 and 5W30.
So let’s start over from the top.

www.gmdexos.com

 

[#18FAN]

Going in Crosstrek today

 

[TiGeo]

As hard as this was for me to believe, Dave maintains that the SuperCar product line is HPL’s pinnacle oil; even above that of the No VII lineup. I’ve got SuperCar in the sump right now; I’ll be checking back in about 14k miles for a follow up UOA to my No VII Euro run.

There’s obviously some benefit in some cases for well-chosen viscosity modifiers; if there wasn’t, SuperCar wouldn’t have them either. We can really only learn by doing, so that’s where I’m headed. Should have the UOA in a short 6-8 months lol

This is what I gleaned from him as well regarding using something from the no-VII lineup vs. their Euro 5W40 which as I understand it is the exact same product as the supercar 5W40 - it's why I use the 5W40. If the no-VII thing was so amazing wouldn't it be used in the highest-performance applications in motorsports?

 

[SubieRubyRoo]

This is what I gleaned from him as well regarding using something from the no-VII lineup vs. their Euro 5W40 which as I understand it is the exact same product as the supercar 5W40 - it's why I use the 5W40. If the no-VII thing was so amazing wouldn't it be used in the highest-performance applications in motorsports?

The No VII series is definitely impressive… my UOA was really good IMO, but it’s also why I switched to SuperCar 0w30 for this 15k UOA, to see how it holds up in comparison. Since it will be an in-service sample, I may take it to 20 or 25k depending on the results.

Truck averaged 19.8mpg thru winter and running E30 about 75% of the time on the No VII Euro 5w30; we’ll see if the VMs & 0w rating of SuperCar result in any measurable difference. My money is on “nothing that’s statistically significant”.