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Cooling Fan compatible for Honda Civic 2006-2011 38616RNAA01 38615-RNA-A01 38611RNAA01
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Water Pump Kit compatible for Ford Five Hundred/Freestyle/Montego 3.0L 05-07 5F9Z8501BB
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Water Pump W/ Gaskets compatible for Mercedes Benz C240 E320 E500 ML320 ML350 SL500 S430
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Electric Inverter Pump compatible for Toyota Highlander Lexus RX400h 3.3L 2006-2010
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Engine Oil Cooler compatible for Ford Powerstroke Diesel 6.0L V8 E-350 F-250 3C3Z6A642CA
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Fan Clutch Assembly compatible for Chevrolet C4500/C5500 V8 6.6L 2003 2004 2005-2007
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Water Pump compatible for Ford Explorer Sport Trac compatible for Mustang Mazda Mercury 4.0L 97-11
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Water Pump compatible for Ford Explorer Sport Trac compatible for Mustang Mazda Mercury 4.0L 97-11
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Coolant Reservoir Tank w/ Cap compatible for Ford F-150 Expedition 2018-2023 FL3Z8A080A
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Fan Clutch compatible for Nissan Frontier/Pathfinder/Xterra 1996-2004 19189626 201825S700
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Cooling System: The Key to Towing in Summer
Written by the PickupChain team · Last reviewed October 17, 2026
Towing, hauling and slow off-road driving all add heat. A healthy cooling system keeps the engine and transmission in a safe range. Signs of trouble are a temperature gauge that climbs on hills, coolant smell, visible leaks or white residue at hose connections.
Radiators, water pumps and thermostats wear out over time. On high-mileage trucks it often makes sense to replace the thermostat, hoses and coolant together when one part fails.
If you tow regularly, an auxiliary transmission cooler is one of the best upgrades. Heat is the main cause of automatic transmission failure, and a larger cooler lowers fluid temperature significantly.
Frequently Asked Questions
+How often should I change coolant?
Most modern long-life coolants last 100,000 miles or 5 years or more, but check your owner's manual. Use the coolant type specified for your engine, as mixing types can cause deposits.
+Do I need a transmission cooler for towing?
Many trucks with a factory tow package already have one. If yours does not, or if you tow heavy trailers in hot climates or mountains, an auxiliary cooler is a worthwhile upgrade.
+Why is my truck overheating only when towing?
Common causes are a partially clogged radiator, a weak fan clutch or electric fan, low coolant or a failing water pump. Check these before blaming the engine.