Filters actually get better at filtering small particles with age until they clog too badly. And new oil tends to be dirtier particle wise than new oil going in. The new oil does restore the additive load and gets rid of acids and ash etc.
Big fleets often pre filter oil before filling equipment to get more time between rebuilds.
My tractor has a 100 hr interval on a straight hours meter. I change at 100 hours but if it had a larger sump I would go out to 250 hours. It holds less than half the oil my last tractor of the same hp held.
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Today's Featured Article - Show Coverage: Central Illinois Strawberry Festival - by Cindy Ladage and Janna Seiz. Every year the coming of summer is highlighted by different events for different people. For some, it is heralded with the end of school, tilling the garden, or completion of the planting season. To us, connoisseurs of find food, antique tractors, farm toys, crafts, and downright fun, the annual Strawberry Festival means summer is here. Every year, in Carlinville, Illinois, the Macoupin County Historical Society and the Macoupin Agricultural Antique Association team up to fill th
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