Trader4 the only thing I disagree with in your post is the comment about BMW V8s. I own two now (e53 and e70) and have had three previously. Only one was purchased new, all put on at least 50k miles while I owned them except the e70 which I bought a couple of months ago (with 85k on it) and all were trouble-free. I know others have different experiences, but if well maintained, they are great engines.

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Mike

2005 e53 X5 4.8is 169k miles
2018 f90 M5
2018 Volvo XC60