My 91 pajero starts great in the garage but it sits outside in the wind all day. Yesterday I bought two new batteries(Platinums 1000CCA ea from Battery Direct)because my old ones just couldn't cut it at -40C in Saskatoon. They work great with the oil pan heater but I want to add a block heater too. The Stanadyne product can be found at http://www.stanadyne.com , then look for dealers. Thanks for all the advice.