Thread: Diesel Doctor...how often?
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  #5  
Old 10-16-2003, 02:54 PM
leathermang leathermang is offline
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Join Date: Sep 2001
Location: central Texas
Posts: 17,290
I am with Steve on this... they would LOVE for you to use a lot of it.. I only add it when I get a sign in my clear 90 degree inline filter.. so far it has been about once every 9 months....
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