If you do a search in the Ferguson Forum, you"ll find some info on this. It comes from a Forum member in England where apparently they cannot get GL-1 type oils. This gentleman contacted Castrol for a recommendation and that recomendation was to use 15W30 motor oil. 15W30 motor oil is not common in the US and so people have used 15W40. Several posters have used this for several years and report better cold weather performance and no other problems. Note that these recommendations were made for a Harry Ferguson vintage tractors (TO-20, TE-& TEA-20 and TO-30, etc) not ones with wet clutches or wet brakes.
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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