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Old 09-14-2016, 02:41 PM
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srmmmm srmmmm is offline
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Join Date: Jun 2013
Location: DFW, Texas
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I wouldn't worry about an additional cooler. I've been towing for 10 years with no additional transmission cooler and the original transmission fluid.

2002 X5 (E53) 3.0 309,000 miles
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