POT 7110 is a TBN 300 crystalline over based calcium sulfonate POT 7110 is a general purpose over based calcium sulfonate typically used as a detergent and rust inhibitor in crankcase lubricants. Nominal dosages would range from 0.5 to 5.0 wt. % of the finished lubricant. POT 7110 applications include automotive, diesel, marine, railroad and stationary diesel lubricants. POT 7110 is compatible with most mineral base oils, white oils, and synthetic base stocks.