The 80% stop fill should be checked every time the tank is emptied.


Interesting one this, how do you adjust that apart from filling the tank
with something other than LPG that will still be there when you take the
filler out. When I put the current tank in my car the company I bought it
off didn't have the correct valve so I had to extend the rod on the float
and the pick up pipe. The calculations to work it out were goddam awful and
I didnt get it exact as it holds 67 litres now.