Gasoline Transfer Tank.

I was going to use an elec valve to control the fuel flow so when not flowing the valve would be shut off. This should allowing the system to perform its vacuum function and prevent the CEL right..

how often does the system do this vacuum to check for open fuel cap condition? it seems if you had a 1/4 or lower tank it would take longer to get a 25 gal tank to vacuum than one 1/4 full.

I would guess the system performs this test say at startup or after seeing the fuel level gauge go up maybe..?? I am not sure.

SO Denny you have a valve that closes after you allow fuel to flow and that prevents the CEL for open gas cap you are saying.??

Denny & Jami wrote:
I've been using a older version of this tank sense 95 (third truck) Tank. I pump it out of the tank with a Holley roitory vane pump and isolate the tank with a solenoid valve, I have a fitting silver soldered into to fill pipe so I can transfer going down the road without stopping. I used to vent it into the trucks vapor system but I would get a open gas cap light so now with this truck so I just have a filter on the vent hose, the tank has a rollover valve built into the vent outlet.

The truck doesn't pressurize the tank it pulls a vacuum on it every so often to check the gas cap. When you install a aux tank and when both the aux tank and main tank gets low it takes to long to pull the slight vaccum so you get the light, the rest of the time the tank vents through the recovery canister to open air. You just have to isolate the tank when not transferring fuel.

Denny

I've been using a older version of this tank sense 95 (third truck) Tank. I pump it out of the tank with a Holley roitory vane pump and isolate the tank with a solenoid valve, I have a fitting silver soldered into to fill pipe so I can transfer going down the road without stopping. I used to vent it into the trucks vapor system but I would get a open gas cap light so now with this truck so I just have a filter on the vent hose, the tank has a rollover valve built into the vent outlet.

The truck doesn't pressurize the tank it pulls a vacuum on it every so often to check the gas cap. When you install a aux tank and when both the aux tank and main tank gets low it takes to long to pull the slight vaccum so you get the light, the rest of the time the tank vents through the recovery canister to open air. You just have to isolate the tank when not transferring fuel.

Denny

carl2591 wrote:
SO when looking at a transfer tank for diesel fuel knowing the alum tanks are quite a bit more expensive, what is the average life of a tank that uses diesel vs gas and steel vs alum.?

I was looking at the http://www.tractorsupply.com/tsc/product/delta-steel-transfer-tank-37-gal?cm_vc=-10005

this one a steel 37 gallon tank for 300 bucks.. I was going to pipe into the fill tube with bulkhead fitting and elec solenoid valve that is normally closed.

the plan was to fill both frame tank and bed tank and when frame tank get to below 1/2 open the valve to allow fuel to flow into tank.

I did read one place someone get a Check Engine light come on doing that.. it was something to do with fueling while running? this was on a ford SD I think older pre 2000 year.

thanks

Yes, you would get a check engine light. It's the same code you would get for accidentally leaving your gas cap off. Your vehicle must check your fuel system for integrity to ensure no fuel vapors are leaking into the air. Most do this by pressurizing the tank with a pump. If your tank cannot hold pressure, it will throw a code. So if you initiate a fuel transfer while the tank is pressurized (vehicle running), you've just compromised the integrity of the main fuel tank.

This is not an issue on diesels since diesel fuel is not as volatile.

As far as I know, having a check engine light due to the above on will not cause issues with your vehicle's performance. If your local jurisdiction requires emission testing, it might be a problem. Otherwise, you could just live with it. Personally, I'd just get a tank with the fueling nozzle and fill it at a rest stop instead. Usually somebody needs a pit stop well before the tank is empty anyway.

Steel tank might rust but they rust slow , I use one now that is twenty six years old . There are many 40 year old cars and trucks with steel tanks .

I just looked at the Northern Tools site. They have the RDS 40 gallon aluminum tank for $439. Why would you get a steel tank, which will rust, for $139 less ?

OP: FWIW:


http://www.atitank.com/products/dot-refueling-tanks

SO when looking at a transfer tank for diesel fuel knowing the alum tanks are quite a bit more expensive, what is the average life of a tank that uses diesel vs gas and steel vs alum.?

I was looking at the http://www.tractorsupply.com/tsc/product/delta-steel-transfer-tank-37-gal?cm_vc=-10005

this one a steel 37 gallon tank for 300 bucks.. I was going to pipe into the fill tube with bulkhead fitting and elec solenoid valve that is normally closed.

the plan was to fill both frame tank and bed tank and when frame tank get to below 1/2 open the valve to allow fuel to flow into tank.

I did read one place someone get a Check Engine light come on doing that.. it was something to do with fueling while running? this was on a ford SD I think older pre 2000 year.

thanks

There are tanks that are DOT approved for both diesel and gas, far more for diesel only... I just skimmed the Northern tool website, many choices, especially if you have a good amount to invest.

Grit dog wrote:
I've only personally used transfer tanks for diesel, but there are many transfer tanks out there advertising DOT approved for gasoline and thousands using them on a daily basis for just that.
It's not as big a deal as you think unless I'm missing something.

A transfer tank is different then an auxiliary tank. A transfer tank is not plumbed into the OEM fuel system whereas an aux tank is. So you very well could have a DOT approved gasoline transfer tank.

I have an RDS aux diesel tank. They sell their auxiliary tanks for diesel use and their transfer tanks for either gas or diesel use.

I've only personally used transfer tanks for diesel, but there are many transfer tanks out there advertising DOT approved for gasoline and thousands using them on a daily basis for just that.
It's not as big a deal as you think unless I'm missing something.