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If it drops and there's no visable leaks from the assister ram then its almost certainly a fault with the quadrant, Creeping hydrulics have nothing to do with pumps, which classically get noisy with slow lift response, Cavitation of the oil, and then no lift, Fergie Hydraulics are child's play compared with modern systems that are normally running-3 pumps at different demand rates and pressures, with a serious of pressures and demanded sequences, gets even better as there then controlled partially through an EDC system.
There is no reason why you couldn't use a SUTO, in both the engine and back end, the demands on oils in old tractors is very low when compared to modern machines, which need oils full of additives to prevent damage to the multitude of wet clutches, Tier 4 engines need even high specs as the oil is used to remove some of the hydrocarbons that were once allowed to go up the exhaust.
There will be a multitude of oils that will meat the spec and the API nos, every mfr will have there own "brand", the easiest way is to ask a distributor there soon look it up on the database.
There is no reason why you couldn't use a SUTO, in both the engine and back end, the demands on oils in old tractors is very low when compared to modern machines, which need oils full of additives to prevent damage to the multitude of wet clutches, Tier 4 engines need even high specs as the oil is used to remove some of the hydrocarbons that were once allowed to go up the exhaust.
There will be a multitude of oils that will meat the spec and the API nos, every mfr will have there own "brand", the easiest way is to ask a distributor there soon look it up on the database.
