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Old 01-21-2015, 12:40 PM   #1
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Canyon Star 3920 Auxiliary Fuel Tank Question

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?
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Old 01-21-2015, 12:51 PM   #2
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If it's never been used, cant you just leave the filler cap off
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Old 01-21-2015, 12:57 PM   #3
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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.
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Old 01-21-2015, 01:00 PM   #4
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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.
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Old 01-21-2015, 01:37 PM   #5
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Quote:
Originally Posted by Vet618 View Post
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.
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Old 01-21-2015, 01:50 PM   #6
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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.
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Old 01-21-2015, 02:35 PM   #7
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Thanks Vet
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