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#4557173 - 10/28/17 12:21 PM Fighting fuel dilution: Honda 1.5L Turbo
cadfaeltex Offline


Registered: 11/19/09
Posts: 672
Loc: TX south plains
Now that Iíve decided on and bought a 2017 Honda Civic Touring with the 1.5L turbo, what things can we do to fight the duel dilution issue with this motor?

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#4557181 - 10/28/17 12:25 PM Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex]
JohnnyJohnson Online   content


Registered: 10/22/09
Posts: 3008
Loc: Wet side WA
Bought or decided to? I would not buy one of the new turbos. Opt for their non turbo if you just have to have a Honda.
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In: Castrol EDGE EP 5W-30 Bosch 3311 122537 7-18-18
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In: T6 5W-40 XG9100 74705 4-22-18

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#4557184 - 10/28/17 12:27 PM Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex]
OneEyeJack Offline


Registered: 09/14/10
Posts: 7485
Loc: S California
UOA?

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#4557191 - 10/28/17 12:34 PM Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex]
Nick1994 Offline


Registered: 02/19/13
Posts: 10446
Loc: Phoenix, AZ
Have you done a UOA to see if it has fuel dilution?

My GDI engine doesn't fuel dilute. I think people talking about GDI fuel dilution as a problem is like people saying Fram filters are junk because of their cardboard endcaps.
_________________________
2015 Hyundai Sonata 2.4L 82k Mobil 1 AFE 0w30 & OEM
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1996 Jeep Cherokee 4.0L 146k Mobil 1 HM 10w40 & Fram Ultra

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#4557197 - 10/28/17 12:39 PM Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex]
cadfaeltex Offline


Registered: 11/19/09
Posts: 672
Loc: TX south plains
Picked up yesterday so not much time to do anything with it. I donít know that it has or will have fuel dilution, however it has been a problem with some of these. What Iím asking if there are steps I can take to minimize the risk - fuel brands, oil choice, etc. I believe from my reading that the design of the engine to prevent LSPI is behind this and Iím not sure itís as big a deal as some make it out to be.

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#4557198 - 10/28/17 12:39 PM Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: Nick1994]
SatinSilver Offline


Registered: 01/24/08
Posts: 10481
Loc: OH
UOAs from others on here with that engine show fuel dilution is an issue. Some of the comments that come back from the lab say to check for fuel leaks.

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#4557213 - 10/28/17 12:51 PM Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex]
Danh Offline


Registered: 10/16/10
Posts: 1777
Loc: .
I don't know there's a lot to be done to prevent it as it seems to be designed-in, maybe to prevent LSPI. But a UOA could give you a better read on your situation. If you get a UOA I'd suggest Polaris/OIl Analyzers as it uses gas chromotography to test for dilution. While it probably won't help fuel dilution it may be wise to use a Dexos1 Gen2 oil in the future.

And as a hint, when you submit a sample to Polaris/OAI specifically ask for GC. If viscosity looks OK, they sometimes revert to a blanket <1% conclusion. Or you could just say in the submission form that the oil tested is a 30 weight instead of 20 that you likely will use.

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#4557272 - 10/28/17 01:39 PM Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: SatinSilver]
Nick1994 Offline


Registered: 02/19/13
Posts: 10446
Loc: Phoenix, AZ
Originally Posted By: SatinSilver
UOAs from others on here with that engine show fuel dilution is an issue. Some of the comments that come back from the lab say to check for fuel leaks.
Just because fuel dilution exists doesn't mean it's an issue.

Is there any evidence that it matters? That fuel dilution is shortening engines life?
_________________________
2015 Hyundai Sonata 2.4L 82k Mobil 1 AFE 0w30 & OEM
2000 Toyota Camry 2.2L 229k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 146k Mobil 1 HM 10w40 & Fram Ultra

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#4557279 - 10/28/17 01:49 PM Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex]
Nederlander75 Offline


Registered: 09/30/07
Posts: 971
Loc: CO
Nothing to be done if you want to maintain your warranty.

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#4557286 - 10/28/17 01:57 PM Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: Nick1994]
SatinSilver Offline


Registered: 01/24/08
Posts: 10481
Loc: OH
Originally Posted By: Nick1994
Originally Posted By: SatinSilver
UOAs from others on here with that engine show fuel dilution is an issue. Some of the comments that come back from the lab say to check for fuel leaks.
Just because fuel dilution exists doesn't mean it's an issue.

Is there any evidence that it matters? That fuel dilution is shortening engines life?


Probably not an issue till after 100k miles. The powertrain warranty will be well over by then unless an extended one is purchased. Only time will tell. But fuel in the oil in a turbocharged engine probably isn't the best thing for it. I think Honda extended warranties go up to 120k and can be purchased online.

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#4557287 - 10/28/17 01:58 PM Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex]
wemay Offline


Registered: 04/04/12
Posts: 9135
Loc: Miami Florida
Congrats on a great car! I own a Turbo GDi and have had no issue for five years. Come to think, no issues with either GDi or T-GDi. I have read all there is to read about LSPI, Fuel Dilution, Intake Valve Deposits...and nadda. You can always use dexos1 Gen2 certified or go with a higher viscosity so you dilute towards the recommended viscosity. Again, I've used conventional oil and even 87 octane in the past and have never had an issue.
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#4557292 - 10/28/17 02:04 PM Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex]
slacktide_bitog Online   content


Registered: 03/20/08
Posts: 6543
Loc: USA
Use a dexos1 gen2 oil

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#4557293 - 10/28/17 02:04 PM Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: SatinSilver]
wemay Offline


Registered: 04/04/12
Posts: 9135
Loc: Miami Florida
Originally Posted By: SatinSilver
Originally Posted By: Nick1994
Originally Posted By: SatinSilver
UOAs from others on here with that engine show fuel dilution is an issue. Some of the comments that come back from the lab say to check for fuel leaks.
Just because fuel dilution exists doesn't mean it's an issue.

Is there any evidence that it matters? That fuel dilution is shortening engines life?


Probably not an issue till after 100k miles. The powertrain warranty will be well over by then unless an extended one is purchased. Only time will tell. But fuel in the oil in a turbocharged engine probably isn't the best thing for it. I think Honda extended warranties go up to 120k and can be purchased online.


Not really, the vast majority of issues born from GDI have surfaced at much lower mileage than 100K in the applications it has affected. We all, including me at times, make mountains out of molehills.
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'13 Hyundai Santa Fe 2.0T (VFS 5w30)

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#4557305 - 10/28/17 02:16 PM Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex]
parshisa Offline


Registered: 05/21/17
Posts: 629
Loc: TX
I have the same turbocharged Civic with 1.5T. Factory fill has been obviously diluted and total sump volumed increased - drained around 4qts. I switched over to Amsoil and ran it for about 5.5K miles. No oil level increase on the dipstick. Ran the UOA with polaris: first time they found severe fuel dilution, asked them to rerun the sample and no fuel dilution was found, wear metals look good. Currently running same oil and oil level on the dipstick is rock solid. With that said, I'm not sure if FD is currently present or it is not. I'm also running a catch can that collects a little bit of the blow by oil. I guess what really is important is not to run bad gas and not to lug the car. Do 5k OCI with real synthetic, do couple UOA to ensure good wear and you'll be golden. Enjoy the car, hopefully you opted for manual
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2016 Honda Pilot 3.5V6 PP 0W20
2017 Honda Civic 1.5T Amsoil SS 5W30

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#4557332 - 10/28/17 02:41 PM Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex]
Indydriver Offline


Registered: 03/20/11
Posts: 2179
Loc: Indiana
Believe your senses. Check oil levels often. Look at the oil color. Smell it. Rub some between your fingers. Learn what good oil looks likes, smells like and feels like. If it goes off quickly, get it tested. About the only thing you can do is move up the change interval and, if youíre no where near making the recommended interval, I would consider going up one grade.


Edited by Indydriver (10/28/17 02:43 PM)
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