Use it all the time! The best stuff in the world for keeping ... (more)
I have a 1999 Ford F-350 4X4 with a 7.3L twin turbo-diesel that I use to pull a 32 foot low-boy...
Since we bought our car new in 3/2001 we have put Prolong Engine Treatment in at every oil change....
I have been using Prolong engine treatment in my 94 3.5l Chrysler Concorde for 60,000 miles, I now...
I've used Prolong in my aircraft every oil change for 4 years. The FAA aircraft mechanics could not...
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