not if you are running a solid e free pump fuel and/or mixing with race fuel. fuel treatments waste of $$ in my opinion except fuel stabilizer if your gas is sitting for awhile
I run Sea Foam in my gas and in my oil. One cap for 5 gallons of fuel and a quarter cap for oil. Does it really do something?, I don't know but I have never blown a motor nor add any type of clutch issue.
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