Tru-Cool
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About Tru-Cool: Thermal Protection You Can Count On
When it comes to protecting your vehicle's transmission and engine from the damaging effects of heat, Tru-Cool has earned a well-deserved reputation as one of the most trusted names in automotive thermal management. Their focused lineup of transmission and engine oil coolers is purpose-built to keep operating temperatures in check — whether you're hauling a heavy load, towing a trailer, off-roading, or simply putting your vehicle through the demands of daily driving.
Why Transmission and Engine Cooling Matters
Heat is one of the leading causes of premature transmission failure. Automatic transmissions are especially vulnerable: as fluid temperatures rise, lubrication breaks down, wear accelerates, and costly repairs become inevitable. An aftermarket oil cooler works by routing hot fluid through a heat exchanger before it recirculates, shedding excess thermal energy and keeping the system running within a safe temperature range. For towing vehicles, trucks, RVs, and performance cars, this added layer of protection is not just a convenience — it's essential preventive maintenance.
The Tru-Cool Product Lineup
Tru-Cool offers several distinct product lines to match a wide range of applications and cooling demands:
- Tru-Cool LPD: The LPD series features a stacked-plate or plate-and-fin design that delivers significantly more cooling capacity and far less flow restriction compared to traditional tube-and-fin coolers. The LPD line offers 30% more cooling and 15 times less flow restriction than traditional tube & fin designs , making it an excellent upgrade for everyday drivers who want reliable protection.
- Tru-Cool Max: Built for the most demanding conditions, Tru-Cool Max delivers optimal protection with double the cooling performance compared to the standard LPD units. It's the go-to choice for serious towing, hauling, and racing applications.
- Tru-Cool Engine Oil Coolers: Beyond transmissions, Tru-Cool also manufactures engine oil coolers, helping keep your motor's lubricant at the ideal temperature for maximum protection and efficiency.
- Tru-Cool Transmission Hardware: Mounting brackets, lines, fittings, and installation hardware round out the lineup, so you have everything needed to complete a professional-quality install.
Innovative Thermal Engineering
Tru-Cool manufactures engine and transmission coolers that are uniquely designed with bypass channels built into them that allow cooler fluid to pass through while warmer fluid is cooled , ensuring that fluid is always at its optimal working temperature — not too hot, and not too cold during a cold-weather startup. This self-regulating behavior is a key advantage over simpler cooler designs that provide no bypass protection.
These coolers are available in a wide selection of sizes to suit light passenger cars all the way up to heavy-duty trucks and commercial vehicles, with GVW ratings spanning from around 11,500 lbs to 40,000 lbs and beyond. All Tru-Cool coolers come with a manufacturer's limited lifetime warranty , reflecting the brand's confidence in the durability and quality of their products.
Who Should Consider a Tru-Cool Cooler?
If your vehicle regularly tows trailers, campers, or boats — or if you live in a hot climate, drive in stop-and-go traffic, or push your vehicle hard on the track or trails — adding a Tru-Cool auxiliary cooler is one of the most cost-effective upgrades you can make. The investment in a quality transmission or engine cooler is minimal compared to the potential cost of a full transmission rebuild or replacement caused by heat damage.