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Service Intervals
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<blockquote data-quote="charismaticmegafauna" data-source="post: 48708" data-attributes="member: 665"><p>Right on what Geezer said. Two things (at least) happen to oil -- once it's removed from a sealed container and exposed to the atmosphere. One, it oxidates (changes, cooks, becomes something else) -- faster when it's heated but will oxidate no matter what. Two, it will get contaminated with the by-products of combustion -- and, some of these (water and sulphur?), have the ability to form acids that etch (and ruin) internal parts (like crank journals). So, even if you don't use your bike (can't imagine this scenario?) -- you need to change the crankcase oil at least once a year because it will become something else (oxidate). If you use it even just a little, you need to change it more often because of the science projects (due to contamination) that will be going on -- and they go on even while you're sleeping (like rust). IMO, using your bike often and on a regular basis is the least challenging usage -- in relation to oil changes, that is.</p></blockquote><p></p>
[QUOTE="charismaticmegafauna, post: 48708, member: 665"] Right on what Geezer said. Two things (at least) happen to oil -- once it's removed from a sealed container and exposed to the atmosphere. One, it oxidates (changes, cooks, becomes something else) -- faster when it's heated but will oxidate no matter what. Two, it will get contaminated with the by-products of combustion -- and, some of these (water and sulphur?), have the ability to form acids that etch (and ruin) internal parts (like crank journals). So, even if you don't use your bike (can't imagine this scenario?) -- you need to change the crankcase oil at least once a year because it will become something else (oxidate). If you use it even just a little, you need to change it more often because of the science projects (due to contamination) that will be going on -- and they go on even while you're sleeping (like rust). IMO, using your bike often and on a regular basis is the least challenging usage -- in relation to oil changes, that is. [/QUOTE]
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