[speeder]

Starting fluid or ether will do a lot more damage than polluting your oil. It should really never be used in anything you were not planning on rebuilding anyways. My '95 F-250 7.3 w mediocre compression started w no problem last winter after sitting out all night in 10deg weather not being plugged in. If your truck doesn't start w good glow plugs and good batteries, you should really figure out what's wrong w it.

An engine w almost zero compression will start w starting fluid. It's seriously something I'd only use in a life or death situation or on a blown engine. I use it on an old Benz when I have to move it but it needs to be rebuilt so who cares.