HPL Premium PCO 0W-20 4.8k mi; 2024 Mazda CX-90 I-6 Turbo 20.5k mi

[cammyfive79]

I just got my first UOA back from Oil Analyzers this morning and it seems like good news. This is my wife’s car - the standard 280hp inline 6 turbo, not the higher tune “S” trim - that she drives to her office 3 days a s week which is a 50 mile round trip on the interstate along with some short trips to the grocery store and other in town errands. I was pleasantly surprised that the fuel dilution was not higher as this fill was in service from November until last week and she loves remote starting the car for 5 or more minutes during cold mornings. This is the HPL Premium PCO (not Euro) 0W-20 that I purchased in late October just prior to the fill. Aside from 1 dealer bulk oil service for 4500 miles it’s had HPL its whole life and the same went in when this sample was drained. Looking to do 7500 miles / 6 months from here on out (that’s the max for warranty purposes) but I doubt we keep this vehicle for the super long haul.

Looking forward to any feedback.

 

[Hohn]

HPL PPCMO has some Ester in it, that's why likely the oxidation is showing as 30 already and was inappropriately (for HPL) flagged. Iron is nearly 2ppm/1k miles and that's within what I'd expect to see in a young engine like this. Still, for mostly highway use, I'd consider bumping up a viscosity grade, Especially since the PPCMO line's premium VIIs make it essentially "Free" to run a thicker oil, the thicker oil isn't created by overdosing cheap VIIs.

This oil is good for at least another 5k or so-- sample at 10k and see what's happening.

 

[cammyfive79]

Thanks! Will run the current fill for 7500 miles which will include about 1500 highway miles for our end of summer vacation and then switch to their Premium 0W-30 for the same duration next fill. 7500 is max mileage per manufacturer for warranty purposes so I'll stay right there.

 

[RDY4WAR]

Good report. I see no reason to use a higher viscosity. (though it won't harm anything either) Despite 5k miles and 2% fuel dilution, the KV100 is just 0.1 cSt down from virgin and TBN is still higher than many common SP oils off the shelf. The virgin oxidation is ~25 so relative oxidation is minimal.

 

[cammyfive79]

Mazda, per owners manual, recommends 0W-20 for USA/Canada and 5W-30 for everywhere except there. No other specific recommendations let alone certifications or requirements.

 

[fantastic]

I think going up a grade could be warranted since you may go to 7500 miles. If keeping it <5k mile intervals and it stays around this 2% or less it could be excellent use of the 0w-20 and maintain warranty?.

I suppose you could try to run it 7k to check fuel dilution and give you a buffer time to get it changed out before 7500 miles. Thanks for posting your Mazda UOA.

 

[ARCOgraphite]

Thanks. Really high overbase on this oil. Since you are not using this TBN reserve by running out the miles I would use a different spec oil for even better results. Also LSPI concerns with the high Ca.

Maybe HPL has a more performance geared , non LL spec of the shelf blend. Something with lower starting TBN.

This is basic oil DP chemistry.

 

[cammyfive79]

Thanks. Now I have some evidence to become a thicky...haha. Since we probably won't keep this car more than another 15-20K miles, I've thought about switching to something like 0W-20 M1 ESP for 5K intervals; mainly as an experiment to see how close one of the best OTS 0W-20s can come to HPL but also for the cost savings too since my TSX will DEFINITELY go to HPL and stay there forever once my VRP regimen concludes.

 

[cammyfive79]

Thanks. Really high overbase on this oil. Since you are not using this TBN reserve by running out the miles I would use a different spec oil for even better results. Also LSPI concerns with the high Ca.

Maybe HPL has a more performance geared , non LL spec of the shelf blend. Something with lower starting TBN.

This is basic oil DP chemistry.

Can you elaborate on "even better results" by running something else for the 5K-ish mileage intervals?

 

[JohnnyJohnson]

For a vehicle with that many miles I think those wear metals are a bit high. I would check them again on the next OCI.

 

[ARCOgraphite]

Can you elaborate on "even better results" by running something else for the 5K-ish mileage intervals?

Your TBN overbase in competition with EP /AW additives. Try your OTC commodity brand oil plan in the appropriate or 1 up SAE grade,

 

[cammyfive79]

Your TBN overbase in competition with EP /AW additives. Try your OTC commodity brand oil plan in the appropriate or 1 up SAE grade,

Interesting, I've never seen that explanation before. Thoughts on running this longer or changing grades, @High Performance Lubricants ?

 

[kschachn]

HT/HS is your friend in a turbocharged engine, something like ESP in a 30-grade. ESP 5W-30 has an API SP license if you're worried about LSPI.

 

[cammyfive79]

HT/HS is your friend in a turbocharged engine, something like ESP in a 30-grade. ESP 5W-30 has an API SP license if you're worried about LSPI.

I'm not necessarily worried about it, but then again I'm not an expert enough to know if I should be worried or not.....ha. Isn't LSPI mainly an issue for small displacement 4 cyl turbos? This is a 3.3 inline 6 turbo.

 

[kschachn]

I'm not necessarily worried about it, but then again I'm not an expert enough to know if I should be worried or not.....ha. Isn't LSPI mainly an issue for small displacement 4 cyl turbos? This is a 3.3 inline 6 turbo.

Yeah I’m not one who worries about it at all really, but I’m not you so that’s why I said it.

If you’re not then I’d probably use a Euro 40-grade. But that’s just me.

 

[High Performance Lubricants]

7ppm Iron 5 ppm aluminum and 4 ppm copper with almost 2% fuel dilution. Why exactly is this a bad sample and needs to find a remedy? Run it longer.

 

[maineiac]

Yeah I’m not one who worries about it at all really, but I’m not you so that’s why I said it.

If you’re not then I’d probably use a Euro 40-grade. But that’s just me.

Just curious... why don't you worry about LSPI (in any passenger vehicle turbo application?)?

BTW: I run Euro 0w40 or 5w40 in a 1.5L Honda turbo and in a Tundra 3.4L twin turbo. Hakuna matata

 

[hemioiler]

Your TBN overbase in competition with EP /AW additives. Try your OTC commodity brand oil plan in the appropriate or 1 up SAE grade,

Can you spell out exactly what you're saying... an oil that has high TBN for long runs is somehow worse when it comes to EP/AW additives?

 

[RDY4WAR]

High TBN doesn't antagonize EP/AW additives. High calcium does that, which can vary greatly in formulated TBN depending on which detergent is used.

200 TBN CaSO4 @ 3% = 6 TBN
400 TBN CaSO4 @ 3% = 12 TBN

Same concentration, double the TBN.

 

[buster]

Looks great to me. Ca isn't high. It's a Mg/Ca detergent system so I don't see any issue with LSPI at all.