Forum Discussion
LostinAZ
May 20, 2013Explorer
We own a 2003 F250 Lariat with the 7.3L diesel engine that we purchased new. Have towed a 38' Monatana 3400RL 5th wheel for the last 6 years. Now have 135,000 miles on the truck of which 30 to 40,000 miles have been towing the 5th wheel or a 20' 12,500 lb equipment trailer. Absolutely no engine problems at all. The weak link on thses trucks is the transmission. Our trasmission started heating up more than nornal the last couple years. Added an additional supplemental transmission oil cooler. That brought the transmission temps back to normal.
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