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-0w-30 must be used during cold winter starts and preferably synthetic -Ford's starter is most likely under-rated if your starter blows, but an aftermarket starter that is more powerful. -Some people say that you should use 15w-40 at all times on a diesel but not true. Check the viscosity for...

I am not using the battery as a medical service vehicle. I live in Canada, so the block heaters are a must. If anyone has any idea how to disconnect the battery from the inverter or if there is a relay or wiring diagram, I would appreciate it. FYI I got two new batteries as well. I have a 7.3...

These things are a spaghetti of wires. I am thinking of putting a relay in to connect and disconnect the battery poles if I cannot find a way to disconnect the batteries from the inverter. Con't

I got the same problem, I shut down everything, including the mains shut-off/master disconnect (by the seat and door)/circuit breaker . I ran a meter through all the fuses under the hood and under the dash while the vehicle was off and the main shut-off was off. I shut off all the circuit...