Thread: 986 engine 'knocking' sound. Help
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Old 08-23-2011, 07:40 AM   #5
Mark_T
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Join Date: Nov 2009
Location: Winnipeg MB
Posts: 2,486
+1 on the Castrol - I use 5w40. Big difference in mechanical noise from the Mobil1 0w40.
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'99 black 986
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