BLOCK HEATER INSTALLATION ON AN M271 BLOCK

To get the plug out you need to get enough leverage on it to break the freeze. Both heating or a sharp clout on a power bar will help.
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P/N A 117 997 02 30 .SCREW PLUG PREHEATER
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It seems that with synthetic oil, cold cranking is much easier as the oil is not like tar
i changed my oil last summer, the dealer only sucks it out with a vacc. as most people do. it took a cheater bar for xtrs leaverage. it was frozen on. i used a pendatrating oil to help to loosen it. but still took the cheater bar. the plug must not have been taken off - ever. while i was ther i used a new plug with a magnet. the book calls for a copper plug, why - i do not know.






