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The oil is getting dark. However I have changed the oil every 2500 miles since owning it for a little over a year considering I do not know what the previous maintenance was like. I have roughly 1800 miles on this oil change so a good cleaning certainly won't hurt hence the reason I plan to drop the pan.
It is top end noise, not bearing related, unless its main bearings but it sounds nothing like mains. Pulling coil connectors or injectors does not change the noise when revving and it sounds like its coming from around cylinder 1 which is where one of the oiling holes was clogged up.
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