2strokedetroit

gas
starting fluid in the air box
heated blankets round motor
build up a ton of snow around the bottem of the car and stick a heater under there
coal or small fire under block (use extreme caution and do not leave unattended) also if its extremly cold dont do it u can ruin your block
diesels
if you have an older diesel turn your key to run a few times
so that the fuel pump cycles and sends fuel to the motor then spray the starting fluid in the intake! if u dont cycle your key to run a few times to run u can ruin your engine possibley even blow it up! you can do it on newer diesels in a really tight bind how ever many have been ruined from it so do it at your own risk
heated blankets round motor
small fire or coals under block again use extreme caution!!!!!!!
or again build up snow around it and stick a heater under the block


gas and diesels
get a trans heater and block heater installed it really truelly will be so much eaiser on your engine they work great and can be realativley cheap! especially if your a do it your selfer! or u can get a pan heater its magnetic and sticks to your oil pan heats your oil for easier cranks!