In John Deere Green...on a hot Summer night....
A block heater should square you right away. They do use a decent amount of electricity though, so you might want to keep an eye on how long you have it plugged in. I used to have mine on a timer so it came on 2-3 hours before I needed to use my truck.
Don't be afraid to give it a whiff of ether if it needs it. You're far less likely to damage a diesel engine with ether. Diesels are "over built" to be as strong as possible and don't mind ether here and there.
85 Tri-Zinger 60
85 ATC250SX
86 ATC250SX
87 ATC250SX
02 XR650L conversion
84 ATC 480R