cowsrus
Well-known member
I have a block heater on a older john deere tractor, and unless i plug it in and warm the tractor engine, it will not start at temps below 40 degrees. my question is how long to leave it plugged in. i'm afraid to leave it plugged in too long, because i'm afraid of burning it out also it uses a large amount of power. it is also exspensive to replace. sometimes if its not too cold 3 hrs works, but if its colder i leave it plugged in all night. i'm worried about burning it out leaving it plugged longer than necessary. i was wondering what some of you guys do