303 was a john deere spec using sperm whale oil for better service over the 20wt oil use in type a hydraulic oil.. It was designed for wet clutches and wet brakes for tractors in the 60's and early 70s.... Todays copy of 303 oil has NO sperm whale oil as it was banned by international treaty... iirc in 1974. Due to the fact the oil has NO sperm whale oil in it, its false advertising to sell it as 303 oil. They can simply relabel it as a substitute for 303 but not as 303 due to consumer trade laws. Some of the manufacturers have already relabeled the oil for those states and have returned to it market. Newer auto/power shift tractors run more pressure, much more heat and require a simi synthetic blend oil. If you have one of these newer tractors you NEED to run the better oil.
If you have an older tractor with wet brakes and wet clutches, the 303 equivalent will work fine.
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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