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SE SD | I change engine oil at least once per year. The main equipment always meets its interval in spring and fall. So, 3 tractors get eng. oil change 2x per year. Air filters are typically a yearly change as well, unless it doesn't get used much. Hyd. oil and filters get changed at recommended (1,000 -1,500hrs) Fuel filters get changed at least once per year as well. | |
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