Quote Originally Posted by ragragtimetime View Post
here's a few ideas http://fivestarmanufacturing.com/Kat_s i feel the block heater plug into a heavy duty wall timer is best (yes you have to remove freeze plug & drain/refill the antifreeze to install) but also have magnetic mount & oil dipstick heaters.
Have you had good luck with KATS ragragtime? I just bought 2 new ones from Zerostart Amazon price was $29 for #3100024 35 mm freeze plugs. Timers are the only way to go also, unless you want to pay a little bigger heating bill. Zerostart gives the cost per kilowatt in their catalog and where they should be placed.

2014 Zerostart Application Guide and Product Catalog.pdf