Oil outside the chain tends to collect dirt and does not serve a functional purpose. Since it can be complicated for oil to reach deeper into the chain, it is common to apply too much oil to the chain. After you apply the oil, wipe the outside of it well. Wait a few minutes for some oil to ooze out from the inside of a chain, and wipe again. This will ensure that the internal mechanism of the chain is well-oiled, while the outside is clean, ensuring ease of use and durability.
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