This shows a home made hydrogen generator on my 1973 Dodge Challenger that supposedly gets 20 to 90% greater miles per gallon. Everyone should have one of these on their vehicle. It works by electrolyzing water into 2 parts hydrogen gas and 1 part oxygen gas and is blended with the air intake line. It costs about to make but pays for itself in just a few tanks of gas, then saves you lots of money from there. All of the parts used are available from the hardware store, auto parts store, grocery store, and pet store. This should not void any warranty because it is like adding octane boost to your fuel. This works in pretty much any gas and diesel vehicle. If your vehicle is fuel injected then you probably have a couple of oxygen (O2) sensors that need to be modified so that you can change the amount of HHO (electrolyzed water) gas you can add. If you do this without modifying the O2 sensors you will probably get a check engine light, or the car might die because of the strict settings in your vehicle's computer don't allow for any changes in oxygen levels. With O2 modifiers alone you can supposedly get 5-10% better MPG because auto makers are in business with oil companies and they want you to use more fuel. If you have any questions just ask.