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08-20-2014, 03:35 PM
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#1
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Member
Join Date: Mar 2013
Location: Hershey, PA
Posts: 71
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Auxiliary diesel fuel tank
Bought a 2008 GMC 2500 diesel. It has a 37 gallon auxiliary diesel fuel tank in the bed. Is this ok to leave empty or should I keep the tank full of diesel fuel? The tank has an automatic transfer system to the main tank as needed.
We camp every 12 days for 3 days. So the truck does more sitting then towing by far.
Thank you!
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2014 Sprinter Copper Canyon 343FWBH
2007 Chevy 3500 DRW Duaramax 8 foot bed
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08-20-2014, 03:48 PM
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#2
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Senior Member
Join Date: Sep 2013
Location: missouri
Posts: 171
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Leaving any fuel tank partially empty, without draining it all and making sure it is dry, will encourage condesation. BAD, BAD, BAD. I would fill it up and place the correct additive to 'keep it fresh' for as long as you can. Maybe you could make an argument to camp more because of the gas. I think I'll try that one on the DW.
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2010 Fusion 403
2011 Chevy 2500 6.6 diesel with Allison trany
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08-21-2014, 05:40 AM
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#3
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Member
Join Date: Mar 2013
Location: Hershey, PA
Posts: 71
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So I guess my next question would be what type of diesel fuel additive would people recommend? Thank you.
__________________
2014 Sprinter Copper Canyon 343FWBH
2007 Chevy 3500 DRW Duaramax 8 foot bed
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08-21-2014, 05:49 AM
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#4
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Site Team
Join Date: Jun 2009
Location: Venice
Posts: 5,346
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I have been using Sea Foam for years in all my stored fuel. (gas and diesel) It claims to stabilize for twice as long as Stabul and is supposed to remove water and clean injectors too. It has worked for me, Hank ( Warm weather can promote the growth of organics in the fuel which may become a concern also)
__________________
 Hank & Lynn
2007 Cougar 290RKS, E-Z Flex, 16" XPS RIBs ( SOLD  .. Gonna miss her ... looking for new 5r)
2004.5 Dodge 2500 QC, LB, 5.9HO, WestTach gauges, Ride-Rite
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08-21-2014, 10:29 AM
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#5
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Senior Member
Join Date: Mar 2014
Location: colorado
Posts: 209
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My 2010 Duramax LMM 3500 dually does not like additives at all. The last time I used it the truck threw a code and the gauges all went dead for about 100 miles into the next fresh tank. I keep my tank full as much as I can. Maybe ask the Chevy dealer or go to the Duramax forum and ask those guys , I have learned a lot about my truck over there. I have a 56 gallon transferflow under mine.
__________________
 2007.5 Silverado 3500 HD,DRW, LTZ red, afe II airbox w/ torque tube, transferflow 56 gal replacement tank,
banks speed brake, transgo jr shiftkit, aux trans cooler, b&w companion hitch.
2010 Fuzion FZ 302 has 12ply F-loads, Dexter ez-flex w/ wet bolts, 6 volt Deka GC 15 batteries, 1 gen battery, solarpanels, leds inside, replaced clear textured door glass with tinted, 87 gallons of loc-tite.
Decals removed.
AKA CONFUZION / PORH HONKY.
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08-22-2014, 06:49 AM
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#6
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Senior Member
Join Date: Dec 2013
Location: Great Falls, MT
Posts: 322
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If you ask 20 diesel drivers you will get 20 different recomendations on additives, from different brands to whether or not using them is benificial...
So for me, yes I use them. Power Service, silver bottle in the summer and white bottle in the winter.
__________________
2016 Alpine 3601RS
6500 Onan
2016 Chevrolet 2500 LTZ/Z71
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08-22-2014, 02:28 PM
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#7
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Member
Join Date: Mar 2013
Location: Hershey, PA
Posts: 71
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I think moral of question is that; 1 I need to camp more and 2 I need to drive truck more. I'll be working on both.
__________________
2014 Sprinter Copper Canyon 343FWBH
2007 Chevy 3500 DRW Duaramax 8 foot bed
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08-22-2014, 02:50 PM
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#8
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Senior Member
Join Date: Dec 2013
Location: Great Falls, MT
Posts: 322
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^^^. That sounds like the perfect solution!
Sent from my iPhone using Tapatalk
__________________
2016 Alpine 3601RS
6500 Onan
2016 Chevrolet 2500 LTZ/Z71
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