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Re: Breakin oil
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Posted by James2 on March 23, 2005 at 09:25:59 from (12.2.142.7):
In Reply to: Breakin oil posted by fixerupper on March 23, 2005 at 06:33:31:
Actual breakin oil doesn't have the over abundance of anti-additives, that standard diesel oil contains. This allows the cylinder wall/rings to seat quicker and avoids having the cylinder liners glaze. I believe one can use regular oil if the machine/engine is loaded quickly after the initial start. I got into a real pickle when rebuilding the JD830 using an initial fill with standard 15W40 JD oil. It was late in the year and didn't get a chance to load the tractor up until late spring . In the interm, I continued to start the tractor and run occasionally to keep it lubed up. Big mistake, the cylinder walls glazed and I had one heck of a time getting the rings to seat. In contrast, the JD 730 was rebuilt, filled with standard JD oil and immediately put to work on an 18 ft disk. Worked out beautifully. Due to the experience with the JD830, the last engine rebuild (MM950G) JD break-in oil was used in the initial fill. Replaced at 5 hrs with regular JD oil and new filter. If you are assured the engine can be quickly loaded, I would go with standard oil, because I believe initial breakin wear will be slightly less. Otherwise I would not chance it.
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