Does anyone use fuel stab/preserver in their Mustangs (specifically a 2014 Shelby GT) if the vehicle is mostly unused in the winter?

I just want to make sure that this additive will not harm the fuel system and/or the engine...

Thanks.

 

Won't harm the fuel system, but what does "mostly unused" mean?

 

By "mostly unused" I meant to say that it will be used infrequently during the winter months in New Jersey, may taken for a short ride on weekends when the temperature is above 40F.

Sorry for the confusion...

 

If you drive it once every week or two, or more often, then you really shouldn't need the fuel stabilizer.

 

I'm in the same boat Martin.

I'm in Michigan, and I might take the Mustang out for a short ride around the neighborhood if there is no salt on the streets and it's warmer. Overall I'm going to fire up my 5.0 once a month in the winter. I asked my dealership about fuel stabilizer, and they said not to use it. I read in the manual Ford doesn't recommend using any fuel additives either. So I just put 93 octane in my tank and call it good.