Community Forums

billerbeck · 01-21-2015, 12:40 PM

Here's a question for you other Canyon Star toyhauler owners. After a year of ownership I still have not used the auxiliary fuel tank and fueling station. My motorcycles are street bikes and it's just as easy for me to fuel them at a gas station. My question is am I likely to get a rust problem in the auxiliary tank by leaving it empty continuously?

96 Wideglide · 01-21-2015, 12:51 PM

If it's never been used, cant you just leave the filler cap off

Vet618 · 01-21-2015, 12:57 PM

I would suggest you put a few gallons in the tank and drive around with it for a few days and then pump it out into a container so you can check for sediment. I use my aux. tank for my bikes, Rhino and jet ski and luv having it. I did have to replace the pump control 3 times as they keep failing, so the last time I modified it with a separate relay for the pump and it has worked perfectly since.

Watch the duty cycle on the pump so it doesn't overheat.

We thoroughly enjoy our 3920 and can't wait for the snow to clear so we can again get on the road!

I also carry a small gas can with just in case we need to take fuel from the aux. and put it in the coach.

billerbeck · 01-21-2015, 01:00 PM

My only concern is having moist air in the tank continuously that could eventually lead to rust inside. I could leave the fill cap off but that would seem to be worse yet if rust is going to be a problem. Plus it may let critters or other debris get in. I'm just trying to decide if it's better to keep it full or let it set empty.

billerbeck · 01-21-2015, 01:37 PM

Quote:

Originally Posted by Vet618

I would suggest you put a few gallons in the tank and drive around with it for a few days and then pump it out into a container so you can check for sediment. I use my aux. tank for my bikes, Rhino and jet ski and luv having it. I did have to replace the pump control 3 times as they keep failing, so the last time I modified it with a separate relay for the pump and it has worked perfectly since.

Watch the duty cycle on the pump so it doesn't overheat.

We thoroughly enjoy our 3920 and can't wait for the snow to clear so we can again get on the road!

I also carry a small gas can with just in case we need to take fuel from the aux. and put it in the coach.

Vet, you mentioned a separate gas can to transfer fuel from the aux. tank to the coach tank. Can't you transfer fuel directly from the aux. to the main using the fueling station pump, hose and nozzle? The main tank is within reach of the fueling station nozzle right? I'm just curious because that was one of my thoughts if I end up filling the aux. tank . . . using it to occasionally add to the main tank.

Vet618 · 01-21-2015, 01:50 PM

My aux. hose is not long enough to reach the coach fill. I had the same idea but decided to just carry a small can as compared to lengthening the hose. My coach is a 2012 so unsure if later models are longer.

I strictly use premium for my toys but wouldn't hesitate to put a few gallons in the coach if needed.

billerbeck · 01-21-2015, 02:35 PM

Thanks Vet

Davepsax · 10-21-2022, 11:44 PM

Quote:

Originally Posted by Vet618

I would suggest you put a few gallons in the tank and drive around with it for a few days and then pump it out into a container so you can check for sediment. I use my aux. tank for my bikes, Rhino and jet ski and luv having it. I did have to replace the pump control 3 times as they keep failing, so the last time I modified it with a separate relay for the pump and it has worked perfectly since.

Watch the duty cycle on the pump so it doesn't overheat.

We thoroughly enjoy our 3920 and can't wait for the snow to clear so we can again get on the road!

I also carry a small gas can with just in case we need to take fuel from the aux. and put it in the coach.

Hi, can you tell me how you found the replacement for the pump control unit? I changed my hose to a 20 foot one so I could transfer to the coach, filled the aux tank with about 100 litres only to find that the pump “on” light comes on but the pump will not run. Any help would be appreciated.

redbaron73 · 10-22-2022, 09:03 AM

I have auxiliary tanks on several vehicles. What I have learned over the last 20 years is that the best care for a tank is to keep it full of fuel, and use the fuel before it expires.

Gas is the worst at going bad, especially in areas with ethanol.

When storing gasoline for a period longer than 2 months, I drain the tank and fill with a non ethanol fuel and add moisture prevention additives.

Diesel has same issues with bio blends.

For the OP, I would suggest using it as a range extender for your coach and bikes, and keep it full, and cycle through it at least once every 3 months.

My transfer tanks have remained rust free and sediment free following this procedure.

Davepsax · 10-24-2022, 08:49 AM

Was the relay contact for the pump between pins 1 and 2, and 7 and 8 ?

Quote:

Originally Posted by Vet618

I would suggest you put a few gallons in the tank and drive around with it for a few days and then pump it out into a container so you can check for sediment. I use my aux. tank for my bikes, Rhino and jet ski and luv having it. I did have to replace the pump control 3 times as they keep failing, so the last time I modified it with a separate relay for the pump and it has worked perfectly since.

Watch the duty cycle on the pump so it doesn't overheat.

We thoroughly enjoy our 3920 and can't wait for the snow to clear so we can again get on the road!

I also carry a small gas can with just in case we need to take fuel from the aux. and put it in the coach.