i have 1 teaspoon per each jar and ive tried a series and parallel and i did notice a increase in gas when using parallel but it just blew the 10 amp fuse. I have a 2003 f350 6.0 diesel super duty and i noticed a little increase in mileage when i first installed it but now i am actually getting worse mileage than i have with out the water4gas system. I have a map sensor enhancer but never installed it because i am worried that some thing could happen to my engine if it was running to lean. what should i do? Thanks, Brent