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2006, first time replacement at 91k miles. Blackstone was showing relatively high levels of copper all the time, but I didn't like the increase of all three lead, copper and iron in the last report. OCI ~7500 miles, didn't do Blackstone every time. Planned to do it around 100k miles, but used the downtime working from home and not needing to drive to get it done.
changed them in fabruary. 120k miles. oil analysis was good. so i won't do an oil analysis again. btw thats km on the analysis. just changing the oil a lot and will change them when I feel I need to.
198K, 2004, no copper showing but the "spring" was gone in several suggesting detonation pounded them at some point. Not bad at all and probably could have gone another 60k.
Had the rod bearing recall done around 25k and then these done at 145k. Mostly highway miles, but still, they were ready to change out. Glad i did it now and didnt wait any longer. Blackstone wasnt showing much copper
216,500 km (133,000 miles). Top of number #3 was worst - copper just starting to show through. Funny, my oil analysis consistently looked fine. Blackstone's report stated "Your original rod bearings still look good with lead (the primary bearing element) at a perfectly average 6 ppm". I'm glad I replaced them anyway.
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