Ok, I have lots of new information on the project. It is done, I picked it up this morning and we took it to fill the tank and check it out.

First, The tank is going to be called a 25 gallon tank, but it actually holds close to 30 gallons. This gives me 50 gallons, 55 with the gas can on the back included.

The tank is custom made out of aluminized steel and it has two baffles, brackets especially for the Commander and ports. It also has a drain in case we ever have to drain a bad batch of gas.

The fill system is really slick. The filler tube was cut and turned to fill the back tank. The filler hose from the front tank was left attached at the tank and was turned and connected to the back tank. This way the back tank fills and overflows into the front tank while you are filling it. The tanks are connected directly for the first half tank or so. When the front tank gets low you turn a 15 minute timer mounted on the console and the back tank pumps gas to the front tank. With the double connection the front tank will overflow back into the rear tank if it is too full. There is now a second fuel gauge mounted under the dash. The rear pump is a heavy duty externally mounted transfer pump.

There has been no effect on the check engine light or on the computer MPG. What does change is that because the back tank flows into the front tank it tends to keep you front tank full and my distance to empty either stays the same or might increase a little. It is just like topping off your tank at every station yoou pass.

Here are some of the pictures:








First steps in building the tank with two baffles: