Quote:
Originally Posted by JFP in PA
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(4) The line on top of the cooler is a water return line to the surge tank in the rear trunk. It is critical that it be reattached as the oil cooler is the highest point in the cooling system, and will be where any air will collect. That line gets it out to the surge tank.
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On 1998 and 1999 Boxsters, I believe the oil cooler line goes from the top of the oil cooler to a tee, which then splits off with one line going to the coolant tank in the trunk and the other line going to a nipple at the oil pump housing at the front of the engine.
I saw a 1997 Tiptronic this past weekend at a TSBL event and the oil cooler had no line at all on the top of the oil cooler.
I looked at the front of the engine on a 2001 and there was no outlet (nipple) on the front of the oil pump housing. So, I think, in that case, there is only the line going from the top of the oil cooler to the coolant tank.
What is the reason for the set up in the 1998 and 1999's?
Regards, Maurice.