[Rich]

I just took out about 47 gals of gas from one of my two tanks.

My mechanic said he didn't think it was phase separation, but just water.

I removed the gas, and had almost 2.5 gals of water. Now I have removed the water and have all the gas in about 10 5 gallon gas cans. It was easy to remove the water once the gas was out of the boat's fuel tank.

So how does one test for phase separation?

If the gas I have is good, then i can use it in my car.

Of course, I still haven't figured out how I got water in just ONE tank. I know where I purchased that load of gas, but still, how did I get it in one tank and not the other? Of course it could have been a loose gas cap, or bad o-ring, but I doubt it as I double check these all the time. It could be from my cleaning that side of the boat too vigorously as that is the dock side.

So, how does one test the gas for phase separation to know if it's good or not?