Quote:
Originally Posted by Scotty's 52 F3
Oil lab results will give the best indication of what it should be. Most of us just don't do it.
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I sent my oil for analysis after a 3500 mile trip plus some local driving (maybe 500 miles). Mobil1 in a clean, recently rebuilt engine. I run a filter with a NAPA Gold element.
The analysis showed the oil was in very good condition, no need to change it on any of their criteria. See attached.