Originally Posted by radomirthegreat
What is your gas mileage up there? The additives burn with the gas, so I believe you'd have to burn more overall liquid to get the same results. Are you an entire mile per gallon off?
In my 89 Lesabre, with temps of 45*F + I was getting around 24 tops. Now I'm struggling for 17 mpg with temps around -15*F up to 5*F. I have to admit I do warm the car up for 20 minutes before I leave work Wednesday-Sunday. I'm not embarrassed -I'm only cold for 30 seconds (2 seconds after I step outside until I 5 seconds after I get in the car).
I do have to get a block heater, as that will help for faster warm up, which in turn means less fuel burnt, and also I will only need to start the car 5 minutes before I leave.