Who makes a block heater that's worth a shit? I just put in a Kat's 600W in the 6.2L on Sunday and it's dead already - shorted to ground (~12 ohms resistance across either lead to ground, at the heater not the cord). Got a whopping 3 days out of it. Can't use one that goes in the lower hose or in heater lines the way the FJ is set up, must be the freeze plug style. I guess I'm back to cranking for several minutes with lots of smoke and maybe ether until I get it replaced. And yes, all 8 glow plugs are good. Engine is 100+ psi low on compression on all 8 (~320 psi). It's basically my only vehicle though.