Re: Block heater heat output? What does your temp. ga. read?
Depending on the ambient temperature, I have seen as high as 100° after 10 hours of block heater use. That was on a night when the temperature was in the 30°s rather than dipping to the predicted temp of below 20° (My daughter unplugged the cord from the timer so she could plug in her stereo while working on her dirt bike. Forgot to plug it back into the timer. Grrrrr). Normally, I plug in for 3-4 hours and when it is 20° outside, I will see a coolant temperature of about 70°. BTW, I have a digital coolant temp sensor plugged into the drain plug in the driver's side of the block. I do not think the OEM gauge moves until you are over 100° but I may be wrong, I do not look at it anymore.
2002 F350 Lariat CC 4x4 Auto 4.10 DRW, DP-Tuner F5 live tuned stock, quiet, 40dd, 40, 60, 80 tow, 80e and 120r, B&W GN, BrakeSmart, 'pooned tank, tank and pre-pump mods, 2µ Dahl 100 filter, regulated return, BTS dual HPOP, AC singles with EDM 34 lpm nozzles, AIS, H2e, Spearco 6.0 IC, Hypermax 3.5" dp--> MBRP 4" 304SS exhaust, BTS tranny, 203º T-stat, Chevron ELC, coolant filter, Oilguard bypass with Schaeffer 9000, WranglerNW 200 amp alternator & Optima group 31 batteries, Nippon-Denso starter, SPA gauges, SteveRacer mods, Hella 80/100W 9007s, Hella Micro DE foglights, 1000FF driving lights, 220W backup lights, Stancor contactor, Michelin XPS Traction tires, X-Springs, Bilstein shox, custom bumpers but otherwise stock. Nov 30 '99 build engine with 16 K miles, Fluidampr, Comp Cam 910 springs, Melling LPOP and ARP headstuds.