Compression Ignition Addict
Join Date: Oct 2010
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Installing a OEM block heater will NOT void your warranty.
The quality of your workmanship could. If you damage another part while you are installing the block heater. Then that would not be warranty. i.e. If you leave shards of metal in the coolants from trying to remove the plug and they float around and destroy the water pump. Your bad.
Remember besides the heater element, You will loose some coolant when you pull the plug out of the block and it will need to be replaced.
Ford installs the block heater in every truck delivered into the northern states. Something like 13-15 states get it as a default. The remaining 37 or so states have to order it as an option, and most dealers just don't order it.
How cold do you expect it to be around where you live? I started my truck many days last winter at -25°F with no problems with no block heater. Just push the remote start and go out 5 minutes later and get into the truck that was running.
2015 F350 CC SRW LWB Lariat, Leveled, BAKflip, Ultra Predator wheels with Toyo A/T 295/65R20, Firestone Airbags and onboard compressor
2011 F350 CC SRW LWB Lariat - Gone
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