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2004 Chevy Tahoe 5.3L

I installed the system on my 2004 Chevy Tahoe with the 5.3L engine a few short months ago......WOW! My computer tells me over the last 3 months that my mileage went from 16.8mpg to 20.2 (you do the math). I only run distilled H20 50/50 mixture with Isopropyl alcohol as recommended and with today's fuel prices I am absolutely convinced that if this system works in my big, heavy SUV it will work for any make or model! Thank you Aquatune, and be assured I am spreading the word.
Joe C.
Albany, NY