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Originally Posted by landrovered
I called F6I and asked a similar question and I was told that my 97k mile boxster motor was at the end of its service life and that it was not a good value for my money. I appreciated this realistic assessment of my options and took the advice.
Let's be realistic about what is cost effective in preventative maintenance and what is not.
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No one knows percentages, but I have the failure logs and field the majority of the most colorful phone calls. I hear from people who have had failures from the IMS bearing from all years and models. In another year or so we should have enough trend data from the failure log to make our own forecasts, but I'll never release them.
Everyone looks for a number, a percentage but they don't realize that a hell of a lot of this failure is related to nothing more than luck as with anything thats mechanical.
We do not apply the IMSR in our facility for cars that have over 85K miles. We hope to avoid instances where an engine fails due to high mileage (from one of the 20 modes of failure) and the IMSR gets the finger pointed at it un-fairly. We are doing EVERYTHING possible to avoid situations that can negatively impact the procedure and the bearing's reputation- even if that means some lost sales. When an engine fails people become fairly selfish looking to find anyone possible to absorb the costs associated and I don't make a very good pin cushion.
Other shops are applying the bearing that we have provided in cars of any mileage, but we are not doing that here in my facility.