Just trying to get an idea of how much 4.10 would affect my overall gasmilage. Right now I have 3.55 I drive about 25 miles hwy and 5miles hwy to work and 15 miles hwy and 15 miles city from work (take a different route) and I get about 19-20 miles per. gal. In June I am transferring and I will be driving about 30 miles hwy 4-5 miles city. Just trying to get an idea of how much my mileage would be affected. I am guessing overall it would not really hurt since I will be doing more hwy driving overall.