Update:
I called Polaris and they said the actual fuel dilution is 9.2%.
I called Polaris and they said the actual fuel dilution is 9.2%.
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2019 Honda CR-V 1.5T, Mobil 1 EP 0W20, 5,104 miles
- Thread starter The Critic
- Start date
Probably should be doing 3k OCIs on that engine.
That's Terrible
OVERKILL
$100 Site Donor 2021
Less Than <2,500 Miles IMO
OVERKILL
$100 Site Donor 2021
UOA's aren't a substitute for tear-downs. If these engines start drinking oil later in life, there's a reason for that.“Although fuel dilution is flagged at high levels there is no apparent wear”
Yea, sounds truly horrible
Have you tried our home remedy of 89/91 octane fuel?
From my experience with Honda 2.0T engine which I run only on 93 octane still had 5%+ fuel dilution
Not necessarily. Wear appears to be normal and the vehicle is still in-warranty. Owner plans to stay with the current regimen (but at 5K drains) until the extended warranty expires in 2027.
See post #26. My iron level was slightly elevated.
Wow! Look what that fuel did to the vis. Wear looks ok. Max oci 4,000. Jmo
Thanks for the update.
True but IMO Even more reason to dump the oil. Come warranty work Dont show them this UOA. We just don't know what the UOA would've looked like had there been no fuel delusion at all. Who wants to gamble future wear of 9% fuel delusion on a small sump?
Obviously, They'll most likely dump the car after the warranty expires so it's the next owner's problems. It may not be this run alone but keep doing this until 2027. I just can't stand these new fuel diluting autos. Makes me think of comparing them to a old out of whack carburetor.
You'd clearly see that on the dipstick.
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Forgot to check before draining.
Back when we had our 18 Crv. 15% olm about 6500 miles. I measured 1.5 qrts of fuel. Give or take. Ran Amsoil SS 0W20.
Here's an older UOA of my 18 CRV. The oil level was high on the dipstick. Not super high, but maybe a few mm above the full mark. Same oil, even lower viscosity. I wouldn't be surprised if my dilution was about the same. https://bobistheoilguy.com/forums/threads/2018-crv-28-4k-m1-ep-0w20-4-3k.353261/post-6076867
I'm really curious about my next UOA in October. I've seen zero increase on the dipstick since I switched to 91 octane.
How short are the trips? How many miles, how many minutes driving?
What state/climate? What months were most of the driving?
Just looking for information since we own a 21 CRV that showed some evidence of fuel dilution when it had really shirt trips early in its life. It gets longer trips this summer, will do an oil sample at next change.
Not entirely sure but probably under 5 miles for most. CA, climate was between 40-80F. Oil was in service for 7 months.
Fuel really doesn’t evaporate with highway drives. Even highway driven 1.5T’s will exhibit this level of dilution.
Thanks for the info. On the fuel evaporation, probably true, but short trips at cool engine temperature raises the percentage of total run time/miles where the engine (really rings) are cool and allow fuel to escape into the crankcase. Lets just say that it takes 5 miles for the engine to warm up enough to stop leaking fuel/air mixture from the cylinders into the crankcase and oil. If you only drive 5 miles each trip (leaking fuel for all of the trip), you are adding a lot more fuel in your 7000 miles than someone who completed the 7000 miles with 30 miles drives (5 miles leaking fuel, 25 miles hot and not leaking fuel).
My enginerd theory and understanding of the issue at least.
I will do a UOA of our 21 CRV that has seen only long trip this summer to see how the theory works out and inform a futre decision to possibly use 5w30 instead of 0w20.
Glad we have this forum to discuss and compare notes, the CRV forum site has banned the issue.
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