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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The owner of JG is Tom Johnson. He was a key player in developing Transynd tranmission fluid. If you call that shop, you can talk to him on the phone...he even answered the phone when I call two years ago.
