Dumping full synthetic @ 3000 is a waste. Do an extended service and have an oil analysis done, THAT'S cheap insurance and very informative.
I would reduce interval on a modified engine, the more it's modded, the lower the interval.
Quote:
Originally Posted by PAUL SS
Where you run into trouble is when you go an extended peroid without an oil change and you have failed to check the oil level. You get down a few quarts (or more) and the remaining oil overheats and breaks down, or worse you loose oil pressure because there is not enough in the pan.
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