Quote:
Originally Posted by oil pan 4
I have read about inconsistent tests with the earlier generation of testers that's why I started out testing samples 3 or 4 times. But after always getting the same number almost all of the time I only test once or twice now.
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I found the same, also, I've been able to show a steady progression testing oil monthly, slowly losing quality, I've never had a sample 'improve' with age.
All that remains is to cross check those numbers with a lab test.