Synthetic oil will seep past seals more than conventional oil. This could turn into an expensive problem on your terramite if it starts to cause leakage in your hydraulic cylinders. It could be a worse problem in a hydraulic system running 1500-2000 psi compared to running it in an engine at 40/psi. I have a Case 646 loader, similar machine to a Terramite. It has an oil cooler and fan in front of the engine. It calls for motor oil in the hydraulic system too, but it was built before synthetic oil became commonly available. I think you should stick with conventional oil in the factory recommended viscosity. If your machine has an oil cooler, it is not working properly. Some oil coolers have a filter on the inlet, the filters can become clogged and cause overheating. If you don't have an oil cooler installed, you can probably find a good useable one at a junkyard or eBay. A fan is necessary too. Hope you can get this problem solved.
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Today's Featured Article - Restoration Story: 1964 JD 2010 Dsl - Part 2 - by Jim Nielsen. Despite having to disassemble the majority of my John Deere 2010's diesel engine, I was still hopeful I could leave the engine-complete with crankshaft and camshaft-in the tractor. This would make the whole engine rebuild job much easier-and much less expensive! I soon found however, that the #4 conrod bearing had disintegrated, taking with it chunks of the crankshaft journal. As a resul
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