I once owned a 300 gallon red diesel tank for Marine use and sometimes over the winter if you got it wrong you could be left with 2oo gals in the tank Iv'e always used a stabaliser. when i sold the tank after about 12 yrs use we drained the dregs and was very surprised only about a cupfull of water and a bit of black debris. Regarding the Startron it's personal choice there are loads out there....Em