I recently used BG 44K Fuel System Cleaner in my 2000 Ford Ranger XLT 4 x 4 with the 4.0 V6 engine. It has 276,000 miles. It previously got 14.5 mpg on the highway. After one can of your BG 44K, my mileage has improved to 18.5 mpg on highway trips. That is what I call outstanding results! I am a true believer in BG products!