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Old 02-03-2010, 10:41 AM   #21 (permalink)
EcoModding Lurker
Join Date: Dec 2007
Location: Central Arkansas
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One very big improvement that I have not seen discussed in this thread is switching to fully synthetic lubricants in the transmission, transfer case, and both differentials. There is so much friction going on between the sum of all of those moving parts that switching to a good synthetic lubricant would make a really big difference in your fuel economy.

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