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Old 02-15-2014, 11:34 AM   #25
tommy d
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Join Date: Oct 2010
Location: Indiana
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Default Re: Differential heater

I have a bunch of free Valvoline 75/140 synthetic gear lube that I would like to try. We have a Dana 60 and have had 0 problems in 9 years of hard racing so I'm afraid to change anything. What do you guys think? Just looking for consistency. We now use 80/90 conventional.
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