Which oil lab JG or Blackstone?
Well this year as I was getting ready to do my annual oil change. ( I always do my oil sample and get the results back before draining my oil.) I was looking at a forum that was championing Blacksto...
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I use my Fumoto valve to get my samples. No messing with pumps & hoses. Also use JG. A friend who has a small trucking company recommended them to me.
