Quote:
Originally Posted by JayG
Since when should the IMSB be replaced every 50k miles???? IIRC, that is the service interval for the LN replacement, not a factory or other 3rd party bearings
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I'm taking a 50k mile service interval for an LN single-row bearing to mean that you definitely want the original factory bearing out at a similarly short interval. From my view of the issue, without at least a direct oil feed, both units aren't really addressing the root cause of the IMS issue, they both have to suffer the consequences of contamination and oil starvation, the differentiation being that aftermarket one is engineered so that a single row of bearings can take on the heavier lifting (vs. a dual row) and the other factory unit simply was not. But either way, a bearing is a bearing and none lasts forever. Certainly not a sealed one inside a hot engine.