Quote:
Originally Posted by maestrogustav
Can it be demanded to be changed preventatively, or must there be some "evidence" of a problem before they do it?
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Bingo...I had the same chat at my BMW dealer. Until it fails, it's not defective under their warranty. They point out that many more do not fail than do. The tech suggested 5k oil changes to help prolong life. Also, he said to listen for a whining sound as first indication of trouble before catastrophic failure. The whining sound can support their warranty repair, he said.