I need to drain my 01 diesel pick up fuel tank, and fix the fuel line, about 20 gallons of diesel. Parked beside my diesel pick up is my 03 gas powered motorhome, and its gas tank is sitting close to empty. I'm thinking about transferring the diesel from my diesel pick up to gas motorhome. After fixing the diesel fuel line, I'll transfer diesel back. I'm sure there will be some residual diesel left in the gas motorhome that will make its way thru the gas fuel system. I'll add 5 gallon of gas then fill up to dilute any diesel left. If the gas motorhome runs rough, I'll drain out of valve on fuel line and add gas. Until its running smooth and nothing but gas makes it thru the gas line. And maybe do a gas filter change. What do you think? Will it work or not?

It'll work but it would be easier and less messy to borrow a few gas cans from some friends.Bill

Around here, we call that, "Going to Duluth by way of Mankato".There is no good reason to contaminate the gas system with diesel fuel, despite the proximity. I'm assuming one or both vehicles move. A better solution would be to use a clean container and transfer in and out of that. Four six gallon fuel cans come to mind as does one of those 30 gallon sewer totes, especially if you have a fuel pump to aid in transfer.

Gas tanks don't have drain plugs and even those that do, will have good amount of fuel left on the flat bottom. Cans cost about $10 and you might find use of them in the future.When diesel engine will run with some percentage of gasoline in it, gasoline engine will simply die on diesel. Unpredictable engine dying on motorhome is not the thing I would look forward.

Buy or borrow gas cans. I think it's a bad idea to temporarily put diesel in a gasoline tank.Or just give the diesel away? It may be cheaper in the long run.

gbopp wrote:Buy or borrow gas cans. I think it's a bad idea to temporarily put diesel in a gasoline tank.Or just give the diesel away? It may be cheaper in the long run.X-2Not only that, the diesel will be contaminated with gasoline. That will be an expense repair to both vehicles.

Diesel temp storage in motorhome gas tank? | Good Sam Community

16 Replies

Chuck_thehammer
Explorer
Sep 06, 2016
buy (4) 5 gallon gas cans.. $40.00 to $45.00.. or ask friends for there cans.

will save you hundreds. do not mix. or mess up the motorhome. to fix a truck

Gas sits on top of diesel. so you will NEED to drop motorhome fuel tank to clean it out.

my opinion. retired auto/truck mechanic.
DustyR
Explorer
Sep 06, 2016
gbopp wrote:
Buy or borrow gas cans. I think it's a bad idea to temporarily put diesel in a gasoline tank.

Or just give the diesel away? It may be cheaper in the long run.

X-2

Not only that, the diesel will be contaminated with gasoline. That will be an expense repair to both vehicles.
gbopp
Explorer
Sep 06, 2016
Buy or borrow gas cans. I think it's a bad idea to temporarily put diesel in a gasoline tank.

Or just give the diesel away? It may be cheaper in the long run.
Kayteg1
Explorer II
Sep 05, 2016
Gas tanks don't have drain plugs and even those that do, will have good amount of fuel left on the flat bottom.
Cans cost about $10 and you might find use of them in the future.
When diesel engine will run with some percentage of gasoline in it, gasoline engine will simply die on diesel.
Unpredictable engine dying on motorhome is not the thing I would look forward.
westend
Explorer
Sep 05, 2016
Around here, we call that, "Going to Duluth by way of Mankato".

There is no good reason to contaminate the gas system with diesel fuel, despite the proximity. I'm assuming one or both vehicles move. A better solution would be to use a clean container and transfer in and out of that. Four six gallon fuel cans come to mind as does one of those 30 gallon sewer totes, especially if you have a fuel pump to aid in transfer.
Trackrig
Explorer II
Sep 05, 2016
It'll work but it would be easier and less messy to borrow a few gas cans from some friends.

Bill

Forum Discussion

Diesel temp storage in motorhome gas tank?

16 Replies

About Technical Issues

Related Content

1994 Safari Continental diesel pusher

Diesel Motorhome

Mercedes Diesel Sprinter motorhome

Used Diesel Motorhomes

Diesel winter storage