One of these days I'm going to have to fill my DEF tank and hope to do so at a truck stop, such as FlyingJ to substantially reduce the cost from the 1 or 2.5 gallon prices. As with most Class A rigs my DEF tank is on the right-hand side behind the wheels. It seems most owners mention going into the diesel island counter flow to get the DEF pump on the proper side. Is the fill hose on the DEF pump not long enough to reach around the pump and fill in the adjacent lane? In other words, if I fill with diesel fuel and close that transaction can I not pull the rig forward and use the DEF pump from the island on the right to fill the DEF tank? That would likely irritate the truckers MUCH less than going into the lane from the wrong direction.Don

You definitely DO NOT want to enter the trucker's diesel lanes from the wrong direction. They will block you in and make you back out of the lanes. What you need to do is go to Tractor Supply or some such and purchase a 5 gallon blue plastic kerosene container. Then when you are in the lane getting fuel you can put 2 or 3 gallons of DEF in the container to add to your tank later. Your idea of using the DEF hose from the lane next to you MIGHT work, I've done it, as long as the DEF hose is long enough, most are NOT, especially Flying J/ Pilot.I use the 5 gallon container, usually buying 3 gallons at a time and add to the DEF tank when parked. After 3 or 4 diesel purchases the DEF tank is full.

Iryrob9301, that sounds like the most sensible way to do it and not cause delay at the pumps for other people. And, you can get the best price as the OP wants to do.Our coach will have the DEF and Fuel filler together around mid coach on the driver's side. Originally on previous Prevost models, the DEF was located at the passenger rear and Prevost moved it to the driver's side. Since DEF is not required at every fill up, your procedure sounds good for those with the DEF filler located on the passenger side.MM.

As a retired accountant I find it strange that so much focus is on the cost of DEFIn the past 3143 miles I have spent just over $60 for 4 2 1/2 gal containers.This is just under 2 cents a mileI will focus on getting better mileage not on my DEF use

rr2254545 wrote:As a retired accountant I find it strange that so much focus is on the cost of DEFIn the past 3143 miles I have spent just over $60 for 4 2 1/2 gal containers.This is just under 2 cents a mileI will focus on getting better mileage not on my DEF useI am also a retired accountant therefore I focus on all costs. ;)Actually I'm just trying to keep life simple, like retirement is supposed to be, plus I'm trying to plan, in advance, for complications that are inevitably going to arise.Thanks,Don

lryrob9301 wrote:You definitely DO NOT want to enter the trucker's diesel lanes from the wrong direction. They will block you in and make you back out of the lanes. What you need to do is go to Tractor Supply or some such and purchase a 5 gallon blue plastic kerosene container. Then when you are in the lane getting fuel you can put 2 or 3 gallons of DEF in the container to add to your tank later. Your idea of using the DEF hose from the lane next to you MIGHT work, I've done it, as long as the DEF hose is long enough, most are NOT, especially Flying J/ Pilot.I use the 5 gallon container, usually buying 3 gallons at a time and add to the DEF tank when parked. After 3 or 4 diesel purchases the DEF tank is full.Thanks. I've heard something about a metal collar being required so the DEF pump will operate. Does this TSC container have this so the magnetic sensor on the pump will work? (I definitely agree about not entering the wrong way.)Don

DEF at bulk pumps | Good Sam Community

Mr_Mark1
Explorer
Sep 11, 2014
Iryrob9301, that sounds like the most sensible way to do it and not cause delay at the pumps for other people. And, you can get the best price as the OP wants to do.

Our coach will have the DEF and Fuel filler together around mid coach on the driver's side. Originally on previous Prevost models, the DEF was located at the passenger rear and Prevost moved it to the driver's side. Since DEF is not required at every fill up, your procedure sounds good for those with the DEF filler located on the passenger side.

MM.
lryrob9301
Explorer
Sep 10, 2014
You definitely DO NOT want to enter the trucker's diesel lanes from the wrong direction. They will block you in and make you back out of the lanes. What you need to do is go to Tractor Supply or some such and purchase a 5 gallon blue plastic kerosene container. Then when you are in the lane getting fuel you can put 2 or 3 gallons of DEF in the container to add to your tank later. Your idea of using the DEF hose from the lane next to you MIGHT work, I've done it, as long as the DEF hose is long enough, most are NOT, especially Flying J/ Pilot.

I use the 5 gallon container, usually buying 3 gallons at a time and add to the DEF tank when parked. After 3 or 4 diesel purchases the DEF tank is full.

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