Auxiliary Fuel Tank

The statements made by Dave H M are exactly the way I understand this situation.

Fred, I disagree with you on gravity feed with diesel. Sure maybe in Calif. Have you got a reference on it?

Also I think gas can be fed from an in bed tank given it is pumped out of the top of the tank, has a shut off valve in the pump line, and has a roll over valve in the vent line.

So can you give us the federal skinny as a reference?

I was reading the new regulations regarding gas vehicles on the Transferflow.com website, and it seems really easy and few restrictions to install a second diesel tank, while the emmissions regulations for gas vehicles are so much tighter, that it seems almost impossible to meet them.

Back in 2004, I was looking at the Ford Fleet Website, and Ford stopped making their vehicles with a return to the fuel tank line comming from the engine. This was because the fuel was getting warm on a hot day, and causing more to evaporate, at a un-acceptable rate. They are only allowed to let 28 grams of fuel evaporate per 24 hours in a gas vehicle. That is less than 1 ounce. Diesel does not face this restriction - yet. So they can install a second tank in a diesel, and still meet all the federal regulations.

There are certain restrictions, such as back in the 70's, there was not a restriction against having the fuel outlet in the bottom of the tank. After a few fittings broke off, and all the fuel leaks out, they changed the law, requiring fuel to come out of the top of the tank. And no gravity fed tanks are allowed. So a truck that was legal to have a 50 gallon tank in the bed feeding the main tank via a 3/8" line back in 1980 is not legal to install one like that anymore.

You can compare prices at a place like Tractor supply, they seem to have good prices on things like this.

Fred.

Price one thru Nationwide Wholesalers.

Do not deal with Ray at RDS, he is a bone head when it come to gas.

From what I can tell the tanks are the same but the rules are different as regards the process for transferring the fuel from the aux tank to the truck OEM tank. I have a diesel and it was very straightforward.

I'm attaching a link to RDS site below that shows their take on this question. I suggest you call them - I did and they are nice people.

http://www.rdsaluminum.com/auto-intro.html


Tim B.

Tim,
I just got my latest Camping World on-line sale flyer and one thing that caught my eye was that they carry the RDS auxiliary fuel tank/toolbox combo units and they are on sale through Sunday, 28 July for pretty attractive prices. Installation price ($75) looks good as well.

Do they make an auxillary tank for "gas" and "diesel"?????