[MikeK]

That depends on two things: 1. How clean is your gas? The same fine rust silt that makes carb needle valves leak does the same to the solenoid valves. 2. What are the valve faces made of? Solenoid valves come in many flavors- brass, ss, etc. and the moveable plunger may be tipped with some unknown polymer or alloy. Just because a vendor sells a valve for fuel use does not mean it will have long-term resistance to erosion or decomp from every fuel. Gasoline with added alcohol and its own voodoo blend of constantly changing formulation constituents may spell disaster for the valve.

Why don't you disassemble the valve, clean and inspect it. Most small port solenoid valves come apart easily. All you usually have to do is remove the coil bolted to the assembly and use a spanner across the thing to unscrew the actual solenoid column from the valve body.