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Old 04-07-2009, 04:06 PM   #1
sleepertruck72
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Join Date: Nov 2007
Location: Turlock California 95380
Posts: 2,075
Heater core replacement ?

I am going to replace my heater core tomorrow because it has a slight leak somewhere. Should I flush the engine with Prestone Flush before or after I swap the Heater core ? I figured before but since it leaks, it may not be a good idea. Its not a leak I can find other than it has stains from behind the lower hose on the heater box. Any suggestions ?
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