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Should High Heat Silicone Be Used To Install An Engine Block Heater.  

Question:

what are the advantages/disadvantages of using high temp silicone when installing the heater? If it is used, how to determine how much to use?

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Expert Reply:

It is recommended to use Loctite RTV 598 High-Performance Silicone Gasket Maker - Black - 2.7-Fl Oz Tube # LT37467 when installing the Kat's Heaters Custom Fit Engine Block Heater - Cartridge Style - 120V - 400 Watts # KH11812.

It will help keep moisture and solid debris out of the mounting area and will have the added benefit of helping transfer heat from the heater to the engine block for a faster warm up process.

There is no specific amount to use really, use some compressed air to blow out the area. Then apply a thick coating of the high heat silicone to the heater and then install it. You can then clean up any that is excess if you wish.

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David B

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