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I have used it for a long time. Started using it in my '05 and have used it in every tank since I have had my '06. White bottle in the winter and silver bottle in the spring and summer. I use 8oz ever fill up. Some times more in the winter of the winter blend to make sure the fuel keeps from gelling. I think it works pretty well. I never have had a problem with fuel gelling since I have used it. Might even gain a MPG or two.
Mine only goes down if I DON'T add the silver bottle... (per given same driving conditions)I use it off and on. Try to put some in every few tankfulls. I swear the last time I put it in, my mileage seemed to go down about 2mpg. Anybody else had this happen?
I use it off and on. Try to put some in every few tankfulls. I swear the last time I put it in, my mileage seemed to go down about 2mpg. Anybody else had this happen?