Quote:
Originally Posted by RallySnake
Which test do you use?
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I use Blackstone Labs
https://www.blackstone-labs.com/?ses...zim55%29%29%2F and I also have them run a TBN test on my sample each year and I compare that number to the previous tests and the 10.6 value that virgin Brad Penn has. Basically, I look for the presence of wear metals and any presence of
antifreeze, water, or fuel. I also confirm the
zinc/phos levels.