On the newer emission-controlled engines, lowering stat temperature is a big mistake, but an old stovebolt won't have a problem with it. Run a 160 in the summer to have a little extra buffer zone before it boils, and run a 180 in the winter to help out the heater. If one brake drum slips off, the other one should do the same. Some hubs have the lug bolts swaged over the drums, so the entire hub assembly has to come off. It's an 8-lug setup, right? That would involve unbolting the axle shaft from the center of the hub and removing it, then removing the 2-nut assembly on the axle tube and pulling the hub, drum, and all as a unit. If it just won't come loose, that's an option.
Try this stuff, it's the best penetrating oil I've ever used.
www.kanolabs.com Of course, it's made right here at home, (Nashville) but I've used it all over the world with the US Air Force.
Jerry
