Studies on the Lubricating Oil for Farm Engines. (II)

On the Declination of Various Properties Lubricant of the Air Cooled and Water Cooled Diesel Engines

Abstract

In bulldozer (Water cooled 4cycle Diesel engine), the time of exchanging oil was about every 120 hours.
But, when Series-3 oil was used with an engine of good condition, the exchange of oil could be extended to every 150 hours.