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Old 07-17-2018, 07:25 AM   #9
O C Diver
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City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 12,834
While I really like Blackstone oil analysis, sometimes their information can be misleading. Case in point: The John Deere I installed in my trawler has slightly elevated metal levels. They described them as concerning, but not a reason to tear down the motor, yet. Talked to my JD dealer, who by his own admission is old school and only does oil analysis when there's a problem. He contacted JD who sent him (and he forwarded to me) a pdf document on oil analysis numbers for all there series engines. The wear metal numbers JD has determined to be normal ( farming, logging, and other commercial applications with a 10,000 hour engine life cycle) were 2 to 3 times my wear metal levels. I appreciate Blackstone's attention to detail, but I worried for a year about those elevated numbers. The takeaway is that you need to watch for changes over several tests and it's really helpful to know the manufacturer's safe wear metal numbers.

Ted
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