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Fighting fuel dilution: Honda 1.5L Turbo #4557173
10/28/17 12:21 PM
10/28/17 12:21 PM
Joined: Nov 2009
Posts: 672
TX south plains
cadfaeltex Offline OP
cadfaeltex  Offline OP
Joined: Nov 2009
Posts: 672
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?

Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex] #4557181
10/28/17 12:25 PM
10/28/17 12:25 PM
Joined: Oct 2009
Posts: 3,335
Wet side WA
JohnnyJohnson Offline
JohnnyJohnson  Offline
Joined: Oct 2009
Posts: 3,335
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.


2004 Corolla 125400
Out: VML 5w-30 TG4967 OCI 5007 Miles
In: EDGE EP 5W-30 Bosch 3311 122537 7-18-18
2006 Duramax 74277
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 74705 4-22-18
Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex] #4557184
10/28/17 12:27 PM
10/28/17 12:27 PM
Joined: Sep 2010
Posts: 7,485
S California
OneEyeJack Offline
OneEyeJack  Offline
Joined: Sep 2010
Posts: 7,485
S California
UOA?

Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex] #4557191
10/28/17 12:34 PM
10/28/17 12:34 PM
Joined: Feb 2013
Posts: 10,866
Phoenix, AZ
Nick1994 Offline
Nick1994  Offline
Joined: Feb 2013
Posts: 10,866
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 85k Mobil 1 AFE 0w30 & OEM
2000 Toyota Camry 2.2L 230k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 147k Mobil 1 HM 10w40 & Fram Ultra
Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex] #4557197
10/28/17 12:39 PM
10/28/17 12:39 PM
Joined: Nov 2009
Posts: 672
TX south plains
cadfaeltex Offline OP
cadfaeltex  Offline OP
Joined: Nov 2009
Posts: 672
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.

Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: Nick1994] #4557198
10/28/17 12:39 PM
10/28/17 12:39 PM
Joined: Jan 2008
Posts: 10,797
OH
SatinSilver Offline
SatinSilver  Offline
Joined: Jan 2008
Posts: 10,797
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.

Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex] #4557213
10/28/17 12:51 PM
10/28/17 12:51 PM
Joined: Oct 2010
Posts: 1,807
.
Danh Offline
Danh  Offline
Joined: Oct 2010
Posts: 1,807
.
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.

Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: SatinSilver] #4557272
10/28/17 01:39 PM
10/28/17 01:39 PM
Joined: Feb 2013
Posts: 10,866
Phoenix, AZ
Nick1994 Offline
Nick1994  Offline
Joined: Feb 2013
Posts: 10,866
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 85k Mobil 1 AFE 0w30 & OEM
2000 Toyota Camry 2.2L 230k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 147k Mobil 1 HM 10w40 & Fram Ultra
Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex] #4557279
10/28/17 01:49 PM
10/28/17 01:49 PM
Joined: Sep 2007
Posts: 975
CO
Nederlander75 Offline
Nederlander75  Offline
Joined: Sep 2007
Posts: 975
CO
Nothing to be done if you want to maintain your warranty.

Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: Nick1994] #4557286
10/28/17 01:57 PM
10/28/17 01:57 PM
Joined: Jan 2008
Posts: 10,797
OH
SatinSilver Offline
SatinSilver  Offline
Joined: Jan 2008
Posts: 10,797
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.

Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex] #4557287
10/28/17 01:58 PM
10/28/17 01:58 PM
Joined: Apr 2012
Posts: 9,556
Kendall, FL
wemay Offline
wemay  Offline
Joined: Apr 2012
Posts: 9,556
Kendall, FL
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.


'18 Sportage LX AWD Pennzoil HM 5w20
'13 Santa Fe Sport 2.0T Castrol GTX Magnatec 5w30
Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex] #4557292
10/28/17 02:04 PM
10/28/17 02:04 PM
Joined: Mar 2008
Posts: 7,006
USA
slacktide_bitog Offline
slacktide_bitog  Offline
Joined: Mar 2008
Posts: 7,006
USA
Use a dexos1 gen2 oil

Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: SatinSilver] #4557293
10/28/17 02:04 PM
10/28/17 02:04 PM
Joined: Apr 2012
Posts: 9,556
Kendall, FL
wemay Offline
wemay  Offline
Joined: Apr 2012
Posts: 9,556
Kendall, FL
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.


'18 Sportage LX AWD Pennzoil HM 5w20
'13 Santa Fe Sport 2.0T Castrol GTX Magnatec 5w30
Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex] #4557305
10/28/17 02:16 PM
10/28/17 02:16 PM
Joined: May 2017
Posts: 737
TX
parshisa Offline
parshisa  Offline
Joined: May 2017
Posts: 737
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


2016 Honda Pilot 3.5V6 PP 0W20
2017 Honda Civic 1.5T Amsoil SS 5W30
Re: Fighting fuel dilution: Honda 1.5L Turbo [Re: cadfaeltex] #4557332
10/28/17 02:41 PM
10/28/17 02:41 PM
Joined: Mar 2011
Posts: 2,198
Indiana
Indydriver Offline
Indydriver  Offline
Joined: Mar 2011
Posts: 2,198
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.

Last edited by Indydriver; 10/28/17 02:43 PM.

2014 Camaro 2SS/RS LS3 Vert 14,000 M1
2012 Sienna 79,000 M1
2007 Tahoe 140,000 PP

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