What is the difference between PA and NY's gasoline additives? In my '98 Escort SW,
Gas bought in PA -> 35.0mpg, $3.029/gal Gas bought in NY -> 28.5mpg, $3.259/gal
In PA, $0.0865/mile In NY, $0.1144/mile
Is PA still using MTBE? (NY has ethanol). Using NY gas, I have not broken the 30mpg mark on this vehicle since last winter. When I go west for something, I consistently get >30mpg on "foreign" gas, and it's cheaper too.