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Gas tank

Brp claims capacity at 6.6 gals. Recently I ran approximatelt 30 miles

after the last bar on the gauge disappeared and I pumped 6.8 gals.
 
There are times I REALLY>>>>>

>>>>>>MISS my '87 Pacific Coast and the <3 gallon fill ups at about 160 miles!! Always seemed to work out about just right, by the time I needed to stop for another soda and a good pee it was time to fill up.

Now if I would have a drink every time I had to stop for fuel I would be in trouble with the dialysis techs at my next treatment! They only allow me about one liter per day between treatments. At least the Doctor won't take the Spyder away from me for fear of dropping it!
 
sounds to me like all gas pumps are not the same as far as accuracy goes.

Could be pump error. But most likely it has more to do with the way the tank is filled.

All tanks these days have an air space designed in. The fill neck extends below or sits lower than the top of the tank. This is to allow for expansion and vapor recovery plumbing so you don't get liquid fuel in your recovery system.

If you put the pump nozzle further into the tank you'll increase the air space and reduce the amount of fuel. If you go to some lengths (with patience) to top off you reduce the air space and effectively increase the fuel capacity.

Many of you mention that you top off and then in a bit the fuel "Goes Away" and you can put more in.

That is because your vapor recovery system slowly vents from the top of your fuel tank. Once fuel blocks the fill hole the only way air can escape is through the top of the tank and this process is restricted. So it takes a moment for pressure to equalize. When this happens the fuel can then occupy the additional space and you can put more in.

BRP calculates this air space with a standard filling method (No Topping Off). Every vehicle (and the gas pumps themselves) tell you NOT to top off. That is because it can reduce the air space in your tank to a point where it can cause problems. I never let this worry me but I'm not saying anyone else should do it.

The published fuel capacity does not include this air space. Those of us who take advantage of more air space can actually get more fuel into the tank than the published amount (from bone dry).
 
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