Re: WK2 trans cooler
Most external coolers are inline with the cooler in the radiator core. They are oil-to-air heat exchangers and are mildly effective compared to the heat exchange rate of the oil-to-water cooler in the radiator.
Since they do remove some heat and the GC Diesel has been shown to have a marginal cooling system when towing, I would say it can't hurt other than causing the ZF to reach temperature later. It would reduce the heat exchanged to the radiator and therefore increase cooling capacity IF the external cooler isn't located in front of the radiator. Is their room for an external cooler below or to sides the radiator?
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