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Old 07-31-2008, 11:44 AM   #16 (permalink)
Bullockracing
EcoModding Lurker
 
Join Date: May 2008
Location: Vivian, LA
Posts: 46

Icarus - '11 Ford Mustang GT
90 day: 20.71 mpg (US)

Walter - '02 Chevrolet Suburban LT
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I already had synthetic in the trans and differential when I switched to synthetic in the engine. It was just based on the scheduling of the fluid changes... Again, maybe just my application, but the stuff worked for me...
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