I found a website that sells a hydrogen injector into car engine via air filter housing. They say that unit increases mileage 45% and also horsepower . The website is http://mileageshop.com/mileage-saver-double-unit. Is it a sham?
Country: United StatesMake: CadillacModel: EldoradoYear: 1990Engine: 4.5
Hello I'm Neal. Don't waste your money. I have never talked to anyone that had any luck with those. Any any testimonials you see cannot be trusted. I would not not even consider it. It it worked everyone would be doing it. This is one of those to go to be true scams!
Shop Owner and Mechanic on multiple makes.