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1 x New Engine Oil Cooler compatible for BMW X1 X3 X4 X5 2004-2019 11427525333 2.0L 3.0L
1 Offer
Turbo Coolant Line Pipe compatible for BMW 320i 328i 528i xDrive F30 2.0L 2011-2018 2Pcs
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New Oil Cooler Assembly compatible for Mazda CX-9 2007-2015 CA0214700 Direct Replacement
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Thermostat Housing Assembly compatible for Buick Cadillac XT5 XT6 GMC Acadia 3.6L 12678779
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Coolant Expansion Tank w/ SensorCap compatible for BMW 5 Series F10 F11 528i 17137619189
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Engine Oil Cooler w/ Pipe compatible for Buick Envision 16-20 compatible for Chevrolet Malibu V40602120
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Heater Hose Pipe compatible for Jeep Grand Cherokee 2011-2021 compatible for Dodge Durango 55038032
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Engine Auxiliary Water Pump compatible for Cadillac CTS STS 2008-2011 3.6L V6 251721
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Heater Hose Pipe compatible for Jeep Grand Cherokee 2011-2021 compatible for Dodge Durango 55038032
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4.4L V8 Thermostat Housing compatible for Land Rover LR3/Compatible for Range Rover Sport 2005-2009
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4.4L V8 Thermostat Housing compatible for Land Rover LR3/Compatible for Range Rover Sport 2005-2009
1 Offer
1x Oil Cooler 94810727103 90785 compatible for Porsche Cayenne 2008-2010 V8 4.8L Turbo
1 Offer
Thermostat Cover Outlet Pipe w/Sensor compatible for Jaguar Vanden Plas XJ8 XK8 1997-2003
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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.