2014 Honda odyssey 158.6k mi // HPL ppcmo 0w20 5.3k mi.
- Thread starter gasman556
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Wear looks great and TBN very strong. The oil is now a 30 grade though. Without TAN and oxidation value it's hard to say. 15.33% change in cSt is a lot in just 5k miles. Not really sure. Run it again. Could be some cleaning going on. I’d ask BS labs to re-run viscosity.
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Re run viscosity on next UOA, or with current sample?
I'd have them re-run this sample just to double check. B/S Labs isn't the most accurate.
I agree with @buster isn’t there a VOA showing the starting cSt of 8.2 on this oil?
Edit: Here
https://bobistheoilguy.com/forums/threads/hpl-premium-plus-passenger-0w-20.385489/
Edit: Here
https://bobistheoilguy.com/forums/threads/hpl-premium-plus-passenger-0w-20.385489/
I wouldn’t even waste my time having Blackstone rerun viscosity. It’s not low, even with obvious fuel (395* flashpoint). HPL has told us multiple times that their oils are intentionally using the known properties of oils to “work thicken” in order to help offset fuel dilution. Thick(er) oil has never been an issue for any engine short of sludge (and we know that’s simply not going to happen with HPL @ 5.5k miles).
Do the smart thing next UOA, and use a different lab that uses gas chromatography to measure fuel content. I’d say shoot for a 7.5k UOA on your next sample, and try WearCheck in NC or Polaris Labs in Indianapolis, or even TestOil (but they’re super $).
Do the smart thing next UOA, and use a different lab that uses gas chromatography to measure fuel content. I’d say shoot for a 7.5k UOA on your next sample, and try WearCheck in NC or Polaris Labs in Indianapolis, or even TestOil (but they’re super $).
I believe so yeah. Around that.
It's really important to get virgin/used oxidation values.
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Maybe it’s simply the nature of this blend. There is enough to combat the process to sludge; even with the oxidative thickening. We’ve seen this with HPL UOAs in several very long OCIs posted. As @SubieRubyRoo highlighted above BUT I do agree this much thickening in just 5k IS worth asking why.
Thanks gents. And thanks for the alternative recommendations on labs @SubieRubyRoo I’ll check one of them next time.
Definitely. I removed my comments because I wasn't suggesting HPL would have this problem. It's loaded with detergents and high solvency base oil so in this case it's a non-issue. But for lesser quality oils I'd be a bit more concerned. But I would expect a premium oil to maintain its grade.
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If you used Amsoil SS before there should be nothing at all left to clean up. Was this engine run on Amsoil for a while or just one interval?
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More varnish/lacquer than sludge, due to the heat.
This is a situation where you probably shouldn't oversimplify the explanation. HPL oils are simply very shear stable and as a result, "typical fuel dilution" will not be sufficient to mask the inherent thickening of oils as they age.
Mobil 1 for first couple oil volumes. Then amsoil SS for several years. Now HPL for forseeable future.
Looks good best I can tell.
Looks good best I can tell.
Not the newer ones. Check out the photos I recently posted in the Passenger Car oil section.
Viscosity has increased as others & BS noted. Good news is the Honda seems to be showing low contaminates. Frankly quite low for the universal averages. Cu way down as an example. Agree w/ @buster to re-run the viscosity test on this sample to double check. See what happens on the next oil drain interval. Thanks for sharing this UOA on your Odyssey.
Those pics look pretty clean! Have you done the VCM muzzler mod to your Acura? If not, WOW!
UOA trends would need to be scrutinized.
Based upon personal experience with HPL PP, I would not freak out over thickening in this context.
Try 5W20 in the HPL Premium Plus favor. Go 10k.
Based upon personal experience with HPL PP, I would not freak out over thickening in this context.
Try 5W20 in the HPL Premium Plus favor. Go 10k.
Thanks for this. Why bump up to 5w?
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