Quote:
Originally Posted by porschedavid
I have a 996 c4s and got coolant leak from gearbox cooler,As anyone changed one of these,How hard to change.i also think it is an oil cooler for gearbox as well
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I'll assume you are referring to the Tiptronic cooler as the manuals did not have a trans cooler. First think you need to determine is if it is the cooler itself, or the lines, or the control valve that is actually leaking. None of these are particularly hard to swap out, but you need to be comfortable working in very tight spaces as there is not much room around any of them.
Once the repairs are done, you will need to top off the cooling system and get the air pockets out.