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Using up boat fuel #4523251
09/22/17 02:51 PM
09/22/17 02:51 PM
Joined: Oct 2005
Posts: 1,689
South Dakota
otis24 Offline OP
otis24  Offline OP

Joined: Oct 2005
Posts: 1,689
South Dakota
I probably have at least 10 gals of boat fuel: gasoline with TCW3 mixed at a 50:1 ratio. Rather than stabilize it till next summer, I would prefer to use it up in my automobiles. How much should I dump in a 20 gal tank prior to filling so that I don't have too much oil? I don't mind "over diluting" it to use it up but would like to get the cleaning benefits of the TWC3 if possible. Would probably run it in my 91 Chevrolet K1500 primarily.


1991 Chevrolet K1500 (4.3, 4x4, 86k miles)

2016 Dodge Grand Caravan
(3.6 V6) 46500 miles
Re: Using up boat fuel [Re: otis24] #4523255
09/22/17 02:55 PM
09/22/17 02:55 PM
Joined: Oct 2014
Posts: 13,278
Canyon County Idaho
CT8 Offline
CT8  Offline

Joined: Oct 2014
Posts: 13,278
Canyon County Idaho
5 Gallons per tank.


2015 Ford F150 2.7
2018 Ford F350 6.2
Re: Using up boat fuel [Re: CT8] #4523261
09/22/17 02:59 PM
09/22/17 02:59 PM
Joined: Jul 2014
Posts: 138
North TEXAS
oldoak2000 Offline
oldoak2000  Offline

Joined: Jul 2014
Posts: 138
North TEXAS
Originally Posted By: CT8
5 Gallons per tank.


^this

Re: Using up boat fuel [Re: otis24] #4523265
09/22/17 03:03 PM
09/22/17 03:03 PM
Joined: Dec 2002
Posts: 42,624
New Jersey
JHZR2 Offline
Global Moderator
JHZR2  Offline
Global Moderator

Joined: Dec 2002
Posts: 42,624
New Jersey
I burn up my remnant 2-cycle mix in my lawn mower.

Re: Using up boat fuel [Re: otis24] #4523294
09/22/17 03:32 PM
09/22/17 03:32 PM
Joined: Oct 2004
Posts: 8,731
Cincinnati, OH, USA
bullwinkle Offline
bullwinkle  Offline

Joined: Oct 2004
Posts: 8,731
Cincinnati, OH, USA
2-stroke won't hurt a thing-I put mine in the Cherokee, I figure a little more oil won't hurt the noisy old beast!


06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 18 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)
Re: Using up boat fuel [Re: otis24] #4523299
09/22/17 03:38 PM
09/22/17 03:38 PM
Joined: Sep 2015
Posts: 6,171
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline

Joined: Sep 2015
Posts: 6,171
Kalifornia Kollective
It will eventually ash cake the CAT. Run as little oil as possible in a CAT equipped car or truck. 2 gallons in 20 would be all I'd tolerate. The rest would get mixed richer and run in chainsaws, weed eaters, etc. smile


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Using up boat fuel [Re: BrocLuno] #4523301
09/22/17 03:42 PM
09/22/17 03:42 PM
Joined: Sep 2010
Posts: 8,173
Texas
4WD Offline
4WD  Offline

Joined: Sep 2010
Posts: 8,173
Texas
That's what I was thinking -not too much - and my BIL burns trash at his place 👹

Re: Using up boat fuel [Re: otis24] #4523411
09/22/17 05:45 PM
09/22/17 05:45 PM
Joined: Sep 2004
Posts: 8,007
Marshfield , MA
andyd Offline
andyd  Offline

Joined: Sep 2004
Posts: 8,007
Marshfield , MA
I would use it in whatever consumes the most gas the fastest. I would use 2 gallons at a time. 50:1 is just good UCL


'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: Using up boat fuel [Re: otis24] #4523413
09/22/17 05:48 PM
09/22/17 05:48 PM
Joined: Sep 2009
Posts: 16,473
OH
fdcg27 Offline
fdcg27  Offline

Joined: Sep 2009
Posts: 16,473
OH
TWC3 is made to burn cleanly, so there should be no issues with any part of the fuel injection system or the cat.
Motor oil isn't made to burn cleanly yet cars can run for a very long time with no issues using a quart each K or so without issues.
You're also talking about maybe five gallons of mix in twenty gallons of fuel over two tanks on a one-shot basis.
I doubt that this would cause any harm. At 50:1, you're talking about 2.5 oz of TWC3 per gallon, which seems unlikely to do any harm.


18 Accord Hybrid FF
17 Forester 18K VME 0W-20
12 Accord LX 96K SSO 0W-20
09 Forester 95K M1HM 10W-30
01 Focus ZX3 118K PP 5W-20
96 Accord LX 104K T5 10W-30
95 318i
Re: Using up boat fuel [Re: BrocLuno] #4523449
09/22/17 06:44 PM
09/22/17 06:44 PM
Joined: Jan 2004
Posts: 4,987
California
nthach Offline
nthach  Offline

Joined: Jan 2004
Posts: 4,987
California
Originally Posted By: BrocLuno
It will eventually ash cake the CAT. Run as little oil as possible in a CAT equipped car or truck. 2 gallons in 20 would be all I'd tolerate. The rest would get mixed richer and run in chainsaws, weed eaters, etc. smile

New OPE have cats in them - and my parent's Echo chainsaw from 2004 has a catalytic muffler. If the stuff is TCW-3 or JASO compliant, it won't hurt the cat.

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