A popular way to prevent transmission overheating on hard-working vehicles is to fit an auxiliary oil cooler

Various universal auxiliary oil coolers are available from ADRAD in a choice of sizes and designs for applications including passenger vehicles, SUVs, 4x4s, trucks, material handling, heavy equipment and more.

ADRAD
ADRAD universal oil coolers are available for both automotive (alloy fin and plate construction) and industrial applications (copper tube with aluminium fin). These industrial coolers are pressure tested to 300psi and can deliver heat rejection up to 42,500 BTU/Hr.

Setrab
These high performing heat exchangers feature a multi-pass configuration, specialised in-line turbulators and concentrated mini-louvered air fins to maximise surface area for enhanced cooling performance.
Brazed as complete units in computerised furnaces, Setrab coolers are tested to withstand appropriate pressures, vibrations and pulsation, delivering superior durability and performance.

Dana Tru-Cool
Tru-Cool Low Pressure Drop (LPD) coolers feature a unique cold weather passive bypass that directs cold, thick transmission oil through quickly, avoiding most of the cooling process – but allows hot, thin transmission fluid to flow through the core to cool.
This provides both optimal heat transfer and improved protection against lube system failure. These oil coolers can deliver 30 percent more cooling and 15 times less flow restriction than traditional tube and fin designs and feature durable brazed aluminium construction.

Installation
Choosing to install the auxiliary cooler before or after the OEM cooler (often in the radiator tank) can affect cooling performance. Adding a dedicated thermo fan can enhance cooling performance where natural air flow is restricted.
When located before the OEM cooler, oil runs from the transmission to the auxiliary cooler, then to the OEM cooler and returns to the transmission. The newly installed auxiliary cooler will bear the brunt of the oil’s heat load, reducing demand on the OEM cooler. This sequence boosts cooling capacity while allowing the in-tank cooler to help preheat the transmission oil during warmup.
When located after the OEM cooler, oil runs from the transmission to the OEM cooler, then to the auxiliary cooler and back to the transmission. The OEM cooler bears the brunt of the heat load, before oil passes to the auxiliary cooler. This method can provide more effective oil cooling but can also increase transmission preheating time.
Entirely rerouting the transmission oil to travel directly to the auxiliary cooler and back removes complexity from the overall system, reducing the chance for potential leaks and failure.
Unfortunately, this system has no provision for the engine to assist in preheating the transmission and is not recommended by some cooler manufacturers.
Whichever installation you choose, an appropriate universal cooler should increase cooling capacity, better protecting the transmission in extreme operating conditions.
If you need advice, ADRAD says it has a wealth of knowledge to help you select the ideal product for your requirements and notes that specialist oil coolers can be custom manufactured by ADRAD to exactly suit the specifications you require.
Auxiliary oil coolers are available across Australia and are supported by ADRAD’s national warranty and distribution network.

For details of your nearest stockist, please contact ADRAD on 1800 882 043 or enquire at customerservice@adrad.com.au