I'm not running IH low ash oil in my old tractors either, but, they are toys. On a hard working gas engine like a 656, the calcium, barium, magnesium additives(which happen to be the additives low ash oil has left out) in a regular diesel motor oil will definetly contribute to burned exhaust valves as it collects on the head and face of the valves and retards the transfer of heat of valve to the seat to the head to the coolant.
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Today's Featured Article - Horsepower Defined - by Staff. Indicated Horsepower This represents the power developed in the enine cylinder as obtained from the pressure in the cylinders. This is pressure obtained from an indicator which shows cylinder pressures. Indicated horsepower does not represent the actual useful power delivered by the engine. Brake Horsepower This is the actual horse power delivered by the engine to the shaft. It is equal to the "indicated horsepower" less the friction of the engine. It is useful hor
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