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					Originally Posted by  piper6909
					 
				 
				No need for a vacuum pump.  Just do what Starter986 said and jack up the back. 
			
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Thanks Piper, 
I used this method on my 987 when installed the center radiator and again after replacing the water pump, but the 981 has also a heat exchanger on the PDK gearbox and I wanted to ensure that no air pockets are left on the system   ...Perhaps is an excuse to get a new tool?  :-)