Used as a full doesage to add 7 points with winter diesel for my 7.3 over the winter here in Michigan. Noticed about 1mpg increase with a noticeable throttle response improvement. Not a miracle product that gains 5 mpg and 50 hp. But works as advertised.
I drive a 2009 F550. My exhaust cleaning had been driving me crazy with how frequent the cleaning took place. After starting the treatment my exhaust cleaning happens much less frequent and for shorter duration.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Works Perfectly
By 
Tyruelz, 
a 
Verified Buyer 
from 
Upstate New York 
on 
April 11, 2017
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