The OP manual for the 1480 IH diesel combine with 436 or 466 engine states that #30 is perfered and they recommend oil change at 200 hrs. In the early / mid 80's IH said 15-40 was OK in those engines as long as you changed it at 100 hrs. Said the reason was that the IH cam lobe and lifter design would slowly destroy the viscosity improvers in the multi viscosity oil.
Otherwise, less cold start wear should happen with a multi vis oil in an engine designed for it.
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Today's Featured Article - My Ford Golden Jubilee - by Troy Estes. This article is about my '53 Ford Jubilee and a story that starts with taking the tractor to my brother's Starter/Alternator Rebuilding shop for a wiring fix. The generator was shot as well as all the wiring. I dropped off the tractor expecting a transformation from a 6 volt to a 12 volt system utilizing the original generator housing, and a total rewiring of the whole tractor. The front end center pin bushing was worn also so I ask that they replace it if they had time. Well, that’s wha
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