goes like a rocket, never been a problem.
at the time there were no tanks availiable, and we spung a leak a couple of weeks before going on holiday.
think i will leave it as it is, its not costing me any more money that way, and as it isnt causing me a problem or the other folk i know thats done it as well, i will see how it goes ......
mind you, i could be wrong to do so, only time will tell.