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I had a KN air filter on a road motorcycle. After a while there was grit in the carb parts and intake manifold.
Not sure how long you want your engine to last, but I would be changing the oil instead of testing the oil. There is nothing to prove with extended oil changes.
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“The further a society drifts from the truth, the more it will hate those that speak it.” George Orwell
“Before a standing army can rule, the people must be disarmed; as they are in almost every kingdom in Europe.
The supreme power in America cannot enforce unjust laws by the sword; because the whole body of the people are armed.”
– Noah Webster, 1787
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