Hi,
First off I am a new member here and we just started tesing this in our 02 TJ and our 05 H2. On the TJ our first day out this week with 4oz to 10 gal the mpg jumped from 15.5 to 19.6. But with the Hummer it was a windy day Saturday 26-40 mph and it still got 11.5 mpg. We are going 200 miles the next couple of days in the Hummer and I am going to drop it to 2 oz to 10 gal and retest it. We will keep you posted. Of course our Hummer does not even have 5000 miles on it so it's still getting broke in.
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