Today is a good day to buy a block heater
The Murphy L129 Series is a combination lube level indicating gauge and adjustable low and high limit switches. It provides protection against low oil level or high level caused by overfill or fuel or water seepage into the crankcase.
LUBE LEVEL SWICHGAGE (ABOVE GROUND ELECTRICAL SYSTEM)
LUBE LEVEL SWICHGAGE (GROUNDED ELECTRICAL SYSTEM)