When I bought my 1994 Class A it had gas in it that was a few years old. Yes it ran a little rough and cranky until I filled it up on the way home, then it smoothed out nicely. I’ve been living and traveling in my RV for the past 2.5 years but still will not run it for 4-5 months while I’m wintering over in Arizona. I’ve never added fuel stabilizer nor have I had any issues with it starting and running in the spring. BTW when I still had my stix & brix with all the sundry yard tools etc I never added fuel stabilizer to them either and with the exception of 2 cycle engines, which need to have the carbs drained when put up, I never used gas stabilizer with them either. I buy the cheapest gas I can find and run vehicles for 250-300K and have never had to clean injectors either.
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Steve