I'd taken oil samples at each oil change (4) since changing from break in oil to XC20-50.
The lab reports:
MICHAEL: Our thumbs are still up for the 12/06/23 sample. Metals pretty much stayed the same after the
longer oil run, leaving us with no concerns about how this engine's oil-sharing parts are getting along at
136.6 hours. Lead's higher level is just due to the longer oil run --it's from blow-by and it wasn't excessive
for the run. Dirt, water, and fuel stayed out, and insolubles remained low. Nice results all around!
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