How do I tell how much gas is in my LPG bottles? Comments Off on How do I tell how much gas is in my LPG bottles? 21 Jan 2016 Vote Up 0 Vote Down Answered Public Public Private Gas Water Heating Anonymous asked January 21, 2016 How do I tell how much gas is in my LPG bottles? 1 answer Vote Up 0 Vote Down Public ⋅ January 21, 2016 Pour very hot water down the side of the cylinder. After about 10 seconds run your hand down the side from top to bottom. When you start to feel the tank getting cold. This is the level of your gas #1 Please login or Register to Submit Answer