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I'm using Harley Davidsons intervals. 5K for the engine oil. But I'm running synthetic. I will also be doing an oil sample on my next change just to make sure it doesn't need changing earlier.
An oil sample is the only real way to know when to change your oil.
Just an example; The interval for the newer Volvos is 7500 miles. I have sampled at 3,4,5,6,7K. The results were at the 4K sample the report said the oil could be changed, and it just got worse after that.
Good ole marketing schemes! If you ask the dealer or oil company, of course they will say every 2500. It puts more money in their pocket seeing you twice as often. But, there's nothing like the satisfaction of a good oil change if you do it yourself and knowing you got fresh butter in the case. ARRGHH ARRGHH ARRGHH!!!
Does anyone change there oil at 2500 mile increments?
Not necessary if using a modern synthetic, but would be advisable with fossil oil. This is unless the bike has issues like an over-rich mixture (contamination), over-lean mixture (overheating causing oxidation), or must endure frequent idling or short trips. In these cases I'd change even synthetic oil more often than 5k.
My ritual over the past 12 years has been 5k intervals, sometimes more often if necessary before a long trip. Years ago I did two lab tests after running each 5k, once in summer and another in winter, and both revealed the oil to still be in good shape. TBN was sufficient to allow an estimated 2k more for the winter test and 5k for the summer. This makes since with the slow warm-ups in winter requiring the oil to absorb more water and acids. IOW, based on these tests I should realize a minimum 7k lifespan for the oil, so I've stayed with my 5k interval.
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