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'14 Accord - Honda 0W20 - High vis or lab error? #4108724 05/28/16 08:18 AM
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vvolcano Offline OP
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Are the viscosity readings most likely an error by the lab? For this OCI and the one prior (10/24/2015) I ran Honda OW20 syn. This is a direct injection engine so that might explain some of the fuel. The wear metals look OK to me. I did find the drop in moly a little curious.. is it normal for additive levels to vary like this even using the exact same oil?

The oil is sitting in a catch pan with brake fluid and other oil, so no chance of a re-test.

Re: '14 Accord - Honda 0W20 - High vis or lab error? [Re: vvolcano] #4108740 05/28/16 08:47 AM
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Kuato Offline
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Interesting. At .06cST over, it's just barely out of spec, but I agree it should have been diluted by the high fuel. Is there a VOA of the Honda oil?


Thick vs Thin test: 15k / 43k miles complete
Re: '14 Accord - Honda 0W20 - High vis or lab error? [Re: vvolcano] #4108772 05/28/16 09:18 AM
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Danh Offline
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If you're sure an 0w-20 was used, I'd bet on lab error. Blackstone relies on human beings watching oil flow through a viscosometer for this measure, which makes error quite possible (same with flashpoint and fuel %, fwiw). If your driving patterns are anything close to those for previous UOAs you would expect considerable shearing.

If you didn't perform the last oil change yourself I suppose the dealer could've used a 5w-30 by mistake. On the bright side, given fuel dilution and how these engines can shear oils, an xxw-30 oil may be a better choice anyway.

Re: '14 Accord - Honda 0W20 - High vis or lab error? [Re: vvolcano] #4108782 05/28/16 09:32 AM
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SatinSilver Offline
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Are you still getting free oil changes from the dealer?

Originally Posted By: vvolcano
The dealership we bought it from included 6 free oil changes.

Re: '14 Accord - Honda 0W20 - High vis or lab error? [Re: Kuato] #4108787 05/28/16 09:36 AM
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zeng Offline
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Originally Posted By: Kuato
Interesting. At .06cST over, it's just barely out of spec, but I agree it should have been diluted by the high fuel. Is there a VOA of the Honda oil?


[email protected]*C of xxW30 is 9.3-12.5 cSt.
Appears to me a Blackstone error.. anyway wear rates looks fine. blush

Re: '14 Accord - Honda 0W20 - High vis or lab error? [Re: vvolcano] #4108822 05/28/16 10:23 AM
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Nate1979 Offline
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Who changed the oil last time?


2015 GMC Sierra 2500 6.0L
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Re: '14 Accord - Honda 0W20 - High vis or lab error? [Re: Danh] #4108833 05/28/16 10:35 AM
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vvolcano Offline OP
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Originally Posted By: Danh
If you're sure an 0w-20 was used, I'd bet on lab error. Blackstone relies on human beings watching oil flow through a viscosometer for this measure, which makes error quite possible (same with flashpoint and fuel %, fwiw). If your driving patterns are anything close to those for previous UOAs you would expect considerable shearing.

If you didn't perform the last oil change yourself I suppose the dealer could've used a 5w-30 by mistake. On the bright side, given fuel dilution and how these engines can shear oils, an xxw-30 oil may be a better choice anyway.

Ah thanks for that information-- makes human error seem like the culprit in this case.

I changed the oil myself this time as well as the previous time. Nothing remarkable about this interval.. around 40 miles roundtrip of daily commuting with a couple of regional trips sprinkled in.

Re: '14 Accord - Honda 0W20 - High vis or lab error? [Re: vvolcano] #4108837 05/28/16 10:42 AM
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Re: '14 Accord - Honda 0W20 - High vis or lab error? [Re: vvolcano] #4109418 05/29/16 01:21 AM
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LotI Offline
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Honda is known to use a break in oil that's high in moly so that's just washing out.


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