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#4715610 - 04/03/18 09:57 PM 1.5L Honda turbo oil dilution
Highkm Offline

Registered: 12/29/09
Posts: 27
Loc: Ontario, Canada
1st oil change on 2017 Honda CR-V 1.5l turbo. Note the level of fuel in oil. I has 20% of oil life before I changed the oil. I did very few short trips I.e less than 10km about 20 times in 11,000 Kimís. I would say that Honda should limit the first use of oil to 5000kms otherwise the viscosity goes below acceptable levels. What do you think?

Edited by Highkm (04/03/18 10:09 PM)
Edit Reason: Missing info

#4715622 - 04/03/18 10:11 PM Re: 1.5L Honda turbo oil dilution [Re: Highkm]
Highkm Offline

Registered: 12/29/09
Posts: 27
Loc: Ontario, Canada

#4715632 - 04/03/18 10:26 PM Re: 1.5L Honda turbo oil dilution [Re: Highkm]
PimTac Online   content

Registered: 03/04/17
Posts: 4628
Loc: Soviet State of Washington
There are lots of threads here regarding this engine and fuel dilution. I would go no more than 5000 miles on any oil.
2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter

#4715637 - 04/03/18 10:42 PM Re: 1.5L Honda turbo oil dilution [Re: Highkm]
Rolla07 Offline

Registered: 11/05/11
Posts: 4754
I would of changed FF at like 1-2k miles but thats just me. Why not try 8000 miles and re-test? My guess is around 8k your visc will have dropped to just about threshhold.
2007 Corolla Red Pearl 155k miles
PP 0w20 & ST 4967

#4715642 - 04/03/18 10:51 PM Re: 1.5L Honda turbo oil dilution [Re: Highkm]
parshisa Offline

Registered: 05/21/17
Posts: 588
Loc: TX
How did the level look like on the dipstick? How much have you drained? I bet it was over 4qts. Just run premium gasoline and real synthetic oil and fuel dilution will be almost gone.
2016 Honda Pilot 3.5V6 PP 0W20
2017 Honda Civic 1.5T Amsoil SS 5W30

#4715661 - 04/03/18 11:21 PM Re: 1.5L Honda turbo oil dilution [Re: Highkm]
OneEyeJack Offline

Registered: 09/14/10
Posts: 7485
Loc: S California
Looks like the flashpoint is down, as well.

#4715673 - 04/03/18 11:31 PM Re: 1.5L Honda turbo oil dilution [Re: Highkm]
Brybo86 Offline

Registered: 10/08/11
Posts: 2956
Loc: Chicago, IL
Call/send this to Honda and ask if this is acceptable.

My guess?
They blame your driving style whatever it may be.

Edited by Brybo86 (04/03/18 11:32 PM)
08 Honda Accord EX-L 2.4L M1 EP 0w20 145k
01 Kymco People 50
95 Lexus LS400 M1 AFE 0w30 193k
95 Yamaha Jog

#4715708 - 04/04/18 12:54 AM Re: 1.5L Honda turbo oil dilution [Re: Highkm]
SonofJoe Offline

Registered: 07/23/16
Posts: 1052
Loc: Europe
This reminds me of the first oil change I had done on my old Daihatsu back in 2007 except that my KV100, after 9000 miles, was even lower at 5.0 cst! My old car had a 1.0 litre normally aspired 3-pot so what you've found isn't unique by any means to Honda Turbos.

The good news is that your primary wear metals are relatively low and nothing to worry about. Remember that wear metal levels are usually at their highest at the first OCI as the engine beds in. I'd expect the numbers to drop back somewhat for subsequent oil changes.

I note that you're from from Canada so this oil has been subjected to driving in some exceptionally cold conditions and this will have contributed massively to the fuel dilution problem. Normally I'd say something here about Global Warming but it only revs up the mouthfrothing brigade so I won't! The other thing I've often wondered with these Honda engines is whether the coolant thermostat is set too low & oil seldom gets up to a temperature conducive to stripping condensed gasoline out of the oil.

It could of course be an issue with thin, low tension rings not adequately sealing the cylinders (the most likely cause on my Daihatsu). This kind of thing is great for fuel economy but bad for blow-by (which drives fuel dilution). Having a turbo will undoubtedly exacerbate blow-by. There's not much you can do about this.

Your Honda factory fill oil will be as good as it gets. Changing to another synthetic won't help you one iota. If the fuel dilution issue persists & bothers you, maybe move to a 5W30. With the fuel dilution, it will over time 'thin' to around about a 0W20.

If you're feeling adventurous, talk to Honda about replacing the radiator cap; one with a higher temperature set-point. It might be what this engine needs to purge the condensed gas from the sump.

#4715750 - 04/04/18 05:02 AM Re: 1.5L Honda turbo oil dilution [Re: Highkm]
Bjornviken Offline

Registered: 12/06/17
Posts: 262
Loc: Finland
And use a acea a5 spec

#4715786 - 04/04/18 06:53 AM Re: 1.5L Honda turbo oil dilution [Re: Highkm]
henni Offline

Registered: 12/28/11
Posts: 306
Loc: key largo,fl
For some reading, check our the crv forum on this topic

Here and Here
2014 Ridgeline RTL with Navi

#4715835 - 04/04/18 08:10 AM Re: 1.5L Honda turbo oil dilution [Re: Rolla07]
Highkm Offline

Registered: 12/29/09
Posts: 27
Loc: Ontario, Canada
Iíve dropped in Amsoil 0w20 XL and will run for 8000km at which point Iíll extract some oil and send to lab. I think I understand now why Honda puts lots of molybdenum into ff oil. Metal to metal contact is expected during breakin period and with dilution even more so. Molybdenum slows down the wear but does not prevent proper break-in. That being said I donít think Hondaís ff is good enough to go full term without serious premature engine wear. New engineers at Honda have yet to experience long term effects of oil fuel dilution.

#4715844 - 04/04/18 08:17 AM Re: 1.5L Honda turbo oil dilution [Re: parshisa]
Highkm Offline

Registered: 12/29/09
Posts: 27
Loc: Ontario, Canada
I have drained 3.7 or 3.8 L roughly. I check the dipsticks twice a week. If it were 4L it would smell of gasoline quite a bit at that would be more than 10%. That would also indicate a serious design flaw as well as bad software, enough to get me out of the vehicle.

#4715853 - 04/04/18 08:24 AM Re: 1.5L Honda turbo oil dilution [Re: SonofJoe]
Highkm Offline

Registered: 12/29/09
Posts: 27
Loc: Ontario, Canada
These new crvs definitely do not warm up fast in cold Canadian weather and I am sure it greatly contributes to the dilution.

#4715856 - 04/04/18 08:25 AM Re: 1.5L Honda turbo oil dilution [Re: Highkm]
Cujet Offline

Registered: 02/15/03
Posts: 7238
Loc: Jupiter, Florida
Very high wear metals. It's no surprise with ultra thin oil in a highly loaded, turbocharged, direct injection engine. I'll bet you a dollar the wear metals decrease markedly with higher viscosity. It seems there have been a handful of engine failures too. Keep on top of it.

Edited by Cujet (04/04/18 08:36 AM)

#4715877 - 04/04/18 08:47 AM Re: 1.5L Honda turbo oil dilution [Re: Highkm]
ARCOgraphite Offline

Registered: 05/17/09
Posts: 12037
Loc: N.H, U.S.A.
High octane fuel and Real synthetic.

Good luck finding a real synthetic.

Wait till you hit 15Kkms.

Wear-in reports always look bad, but,
that fuel dilution% is atrocious though.

I don't know if it will go away; reads like a ring/pistion design flaw.

2014 Nissan Rogue S CVT, OC#9 41392mi-QSUD10W30 + M110A CHAMP Filter; 2017 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter

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