Size an auxiliary transmission cooler based on GVW, towing load, transmission type, and driving conditions.
Input Parameters
Results
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Heat Generation
BTU/hr
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Min Cooler Capacity
BTU/hr
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Recommended Size
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Max Fluid Temp
°F
Note: Transmission fluid life halves for every 20°F above 200°F. Auxiliary coolers are essential for towing. Install after the factory cooler (in series) for maximum cooling.
Reference
Heat Gen = Total Weight × 2.5 × Trans_factor × Cond_factor
Total Weight = GVW + Towing Weight
Trans Factor: Auto=1.0, CVT=1.2, DCT=0.9
Cond Factor: Highway=0.7, Mixed=1.0, Mountain=1.5
Cooler Capacity ≥ Heat Gen × 1.25