the 80w90 gl 4/5 oil surely didn't harm the lift cyl. as fo rthe pump. that's a hair split. No.. t dodn't hurt the pump. technically.. the sulfur compounds in the oil MAY attack the yellow metal in the pump. that is a long, long term issue. and not something that you worry about short term. that said. many 80w90 gl4/5 oils are also mt1 rated and or yellow metal safe anyway. so may be a completely moot point.. not just a point of 'minutia'.
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Today's Featured Article - Madison's County - by Anthony West. Philip Madison has been a good friend of mine for quite some time. He has patiently suffered my incessant chit chat on the subject of tractors for longer than I care to remember, and on many occasions he has put himself out, dropped what ever it was he was doing, to come and lend a hand cranking handles, or loading a find onto a trailer. Although he himself has never actually owned or restored a tractor, he was always enthusiastic and always around helping with other peoples projects.
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