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Thermostat/pressure relief valve

Engine

Vehicle Information: Model: 911; Year: 1986; Body Type: Coupe; Engine (type, size, modifications): 3.4 turbo; Total Mileage: 250,000;

Hi Chris,I have a small leak at the thermostat/pressure relief valve joint with the inner upper oil line. In order to get at it I have to remove the outer line but this joint will not come loose despite some heat being applied. How much heat can I apply without damaging the valve? Any other suggestions?Keep those Q&A's comming. Really enjoy them.Cheers, Johan Carnell

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