To use the water/meth system in your application you will want to do an 80% water 20% methanol mixture..... works great... . need bigger tank or is a pain in the *** keeping up with the level unless the passes are few and far between... which they are not here in colorado... if you change the mixture opposite then u will get hp gains but the egts will climb faster... . make sure you work your way up to the amount you are spraying with the load you usually tow... . get the system with the computer and tell them all your info and they will get your nozzles really close... . also they wont warranty the pump if you use windsheild washer fluid in it which you can do in a pinch but make sure you get a print out of the methanol percentages of the different brands... some brands cannot be used at all! they will know on the warranty because there is a piece in the pump that staiins the color of the die in the fluids used... .