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					Originally Posted by  pothole
					 
				 
				What are you inferring involves more expansion and contraction - the low temp or standard stat - and why? 
			
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the engine itself. Specifically near the head gasket, and whatever unwelcomed forces could bear upon it. In speaking to my mechanic once, who mainly works on air-cooled engines, he pointed out that these can expand as much as 4-5 mm's in either direction, which of course got me thiking about our varieties. 
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					Originally Posted by  jb92563
					 
				 
				 
Just pondering some contradictory logic to see whether the thing is of any use at all or just a $160 gimmick from the Marketing dept. 
			
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correct me if I'm wrong but at least some later 997's had these low temp t-stats stock.