I live in the upper east coast and I know that some of the fluid that goes to -20 degrees that someone said could be used to inject. I wondering what the %'s are with it? and would it be ok to use? I heard the -40 to-50 is bad to use but I just want to get some facts straight.

Also does running w/m increase your gas mileage? and if so to what mpg?

Thanks for looking

 

anyone?

 

really? nothing?