You asked: ''What would be the purpose of a TOP plug if it is never used?''
The top plug is used in two situations:
1. When doing an oil change. Open the top plug and put oil in until it weeps out of the top plug, then it's full.
2. When checking the oil level and nothing comes out of the bottom plug you close the bottom plug and open the top plug. Then add oil, a quart or more, until oil weeps out of the top plug.
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Today's Featured Article - Talk of the Town: How to Crank Start a Tractor - by Staff. This interestin discussion is from the Tractor Talk Discussion Forum. Remember that safety is your first priority - make sure you know what you are doing before attempting a potentially dangerous activity!
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