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Fuel Dilution - FAQ #4599227
12/09/17 05:44 PM
12/09/17 05:44 PM
Joined: Aug 2008
Posts: 21,323
ON, Canada eh?
StevieC Offline OP
StevieC  Offline OP
Joined: Aug 2008
Posts: 21,323
ON, Canada eh?


LOL

Last edited by JHZR2; 12/11/17 07:37 AM. Reason: Censor bypass

'18 Dodge Grand Caravan GT - AMSOIL SS 5w20
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF
Re: Fuel Dilution - FAQ [Re: StevieC] #4599371
12/09/17 08:30 PM
12/09/17 08:30 PM
Joined: Oct 2012
Posts: 4,825
Taiwan
Ducked Offline
Ducked  Offline
Joined: Oct 2012
Posts: 4,825
Taiwan
Goes on a bit.

(fuel dilution) "is why the service interval has a time limit as well as a mileage limit" (probably not an exact quote but close enough) doesn't appear to make sense.

Re: Fuel Dilution - FAQ [Re: StevieC] #4599386
12/09/17 08:56 PM
12/09/17 08:56 PM
Joined: Aug 2008
Posts: 21,323
ON, Canada eh?
StevieC Offline OP
StevieC  Offline OP
Joined: Aug 2008
Posts: 21,323
ON, Canada eh?
Excessive idling / stop-go traffic. Low miles but high fuel dilution because of lots of injection cycles and/or low temps not heating the oil enough to evaporate some of the fuel.


'18 Dodge Grand Caravan GT - AMSOIL SS 5w20
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF
Re: Fuel Dilution - FAQ [Re: StevieC] #4599393
12/09/17 09:14 PM
12/09/17 09:14 PM
Joined: Oct 2012
Posts: 4,825
Taiwan
Ducked Offline
Ducked  Offline
Joined: Oct 2012
Posts: 4,825
Taiwan
Originally Posted By: StevieC
Excessive idling / stop-go traffic. Low miles but high fuel dilution because of lots of injection cycles and/or low temps not heating the oil enough to evaporate some of the fuel.


I dunno. Are low miles necessarily, or even generally, slow miles?

I was thinking of my own situation, where the car is mostly recreational use so infrequent but gets up to temperature when it is used.

Re: Fuel Dilution - FAQ [Re: StevieC] #4599420
12/09/17 10:00 PM
12/09/17 10:00 PM
Joined: Aug 2008
Posts: 21,323
ON, Canada eh?
StevieC Offline OP
StevieC  Offline OP
Joined: Aug 2008
Posts: 21,323
ON, Canada eh?
It really depends on what temperature the oil reaches and for how long to help evaporate the contaminants. Then if it spends more time idling than actually moving then that is a factor as well as my first point. grin2


'18 Dodge Grand Caravan GT - AMSOIL SS 5w20
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF
Re: Fuel Dilution - FAQ [Re: StevieC] #4599433
12/09/17 10:26 PM
12/09/17 10:26 PM
Joined: Jul 2010
Posts: 19,310
PNW
ZeeOSix Offline
ZeeOSix  Offline
Joined: Jul 2010
Posts: 19,310
PNW
That guy's a bit "snotty" ... LOL Guess he thinks that gets subscribers.

Re: Fuel Dilution - FAQ [Re: StevieC] #4599671
12/10/17 09:00 AM
12/10/17 09:00 AM
Joined: Aug 2008
Posts: 21,323
ON, Canada eh?
StevieC Offline OP
StevieC  Offline OP
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ON, Canada eh?
He is cranky for sure.... grin2


'18 Dodge Grand Caravan GT - AMSOIL SS 5w20
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF
Re: Fuel Dilution - FAQ [Re: StevieC] #4599711
12/10/17 09:35 AM
12/10/17 09:35 AM
Joined: Sep 2010
Posts: 7,517
Texas & Global
4WD Offline
4WD  Offline
Joined: Sep 2010
Posts: 7,517
Texas & Global
I could not even finish ~ donít think Iíd send him a question and then sit and hear it mocked like a school boy Ö

Last edited by 4WD; 12/10/17 09:36 AM.

2018 Chevy 1500 Z71 4WD
2017 Chevy Tahoe LT 4WD
2014 Fusion Hybrid Titanium
2013 Cruze LTZ - RS Turbo
Re: Fuel Dilution - FAQ [Re: StevieC] #4599737
12/10/17 10:06 AM
12/10/17 10:06 AM
Joined: Dec 2003
Posts: 9,929
Florida, Cape Coral
Eddie Online sleepy
Eddie  Online Sleepy
Joined: Dec 2003
Posts: 9,929
Florida, Cape Coral
I would like to see some REAL data that plots % fuel vs wear. Based on 5 or so UOAs I've seen showing fuel dilution of 1 to 3% I've observed no real increase in wear. I think some of us get paranoid over the idea of fuel dilution. Ed


CX5 Touring 2.5L :-)
Re: Fuel Dilution - FAQ [Re: StevieC] #4599772
12/10/17 10:48 AM
12/10/17 10:48 AM
Joined: Sep 2004
Posts: 7,833
Marshfield , MA
andyd Offline
andyd  Offline
Joined: Sep 2004
Posts: 7,833
Marshfield , MA
In the norm, from reading UOAs, fuel < 1%. Fuel dilution was a major deal with carbs and chokes. In a modern car, its a non-problem.


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Fuel Dilution - FAQ [Re: andyd] #4599815
12/10/17 11:34 AM
12/10/17 11:34 AM
Joined: Aug 2008
Posts: 21,323
ON, Canada eh?
StevieC Offline OP
StevieC  Offline OP
Joined: Aug 2008
Posts: 21,323
ON, Canada eh?
Originally Posted By: andyd
In the norm, from reading UOAs, fuel < 1%. Fuel dilution was a major deal with carbs and chokes. In a modern car, its a non-problem.


I think lubricants have improved in this regard as well since then as well.

Last edited by StevieC; 12/10/17 11:34 AM.

'18 Dodge Grand Caravan GT - AMSOIL SS 5w20
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF
Re: Fuel Dilution - FAQ [Re: andyd] #4599855
12/10/17 12:46 PM
12/10/17 12:46 PM
Joined: Oct 2010
Posts: 1,829
.
Danh Offline
Danh  Offline
Joined: Oct 2010
Posts: 1,829
.
Originally Posted By: andyd
In the norm, from reading UOAs, fuel < 1%. Fuel dilution was a major deal with carbs and chokes. In a modern car, its a non-problem.


You're likely reading UOAs from Blackstone, which are not reliable for gauging fuel dilution. Look at Oil Analyzers/Polaris UOAs instead, which uses gas chromotography for this purpose. On Blackstone UOAs ignore fuel dilution and look at viscosity instead: you'll see lots of samples below or nearly below grade.

Fuel dilution is an issue withnDI/TGDI engines; the question is how harmful it is. But when you hear reports of increasing sump levels it can't be a non-problem.

Re: Fuel Dilution - FAQ [Re: Danh] #4600202
12/10/17 08:11 PM
12/10/17 08:11 PM
Joined: Aug 2016
Posts: 525
West Michigan
Balrog006 Online content
Balrog006  Online Content
Joined: Aug 2016
Posts: 525
West Michigan
Originally Posted By: Danh
Originally Posted By: andyd
In the norm, from reading UOAs, fuel < 1%. Fuel dilution was a major deal with carbs and chokes. In a modern car, its a non-problem.


You're likely reading UOAs from Blackstone, which are not reliable for gauging fuel dilution. Look at Oil Analyzers/Polaris UOAs instead, which uses gas chromotography for this purpose. On Blackstone UOAs ignore fuel dilution and look at viscosity instead: you'll see lots of samples below or nearly below grade.

Fuel dilution is an issue withnDI/TGDI engines; the question is how harmful it is. But when you hear reports of increasing sump levels it can't be a non-problem.


Why not? Increasing to what level? Slight increases arenít any cause for concern-just like normal slight overfills arenít, but Iíve yet to see any pictures of major increases in overall sump volume reported here.


19 Ridgeline RTL-E >1K factory fill, A01
08 CRV 275K+ VSyn w/ML, A01
04 JD L130 740H, Mobil S 5w30
13 JD 2032r 325H, JD Plus 50 ii 15w40
M1Delvac 5w40 in OPE

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