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Originally Posted By: Quattro Pete Welcome to BITOG! Maybe others will chime in with more recent information, but here is one prior thread to get you started: https://bobistheoilguy.com/forums/ubbthreads.php/topics/4008561/Best_Oil_Analysis?#Post4008561 I myself use Wearcheck - they provide...

Hi all -- this is my first post. My apologies if this isn't the correct forum. I know most people seem to use Blackstone for UOA. Their prices seem reasonable, and I haven't heard anything "bad" about them. But, I was wondering about other vendors: like ALS Tribology, or Caterpillar's "SOS"...