Question, I bought a 1953 M37 and I have had it for one month now. I need to change the oil and it looks black as a black cat, so what kind of oil would you recommend to use, second I would like to change the fuel filter, this looks like it has been on since the Korean war, and I also would like to have someone help me with the Gage's in the instrument panel when the vehicle is operating my oil pressure Gage is always on 60 for the pressure, the battery Gage never goes past the red zone even through the battery's are at full charge, and my temp Gage I don't even thing that works at all. I have a 24 volt system, I did find out that they make these Gage's in 12 volt and 24 volt. Thank you
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