90k on the Impala. Has had either 3k dino or Mobil 1 changed using the OCL. Have Auto-Rxed it twice and have been using Lube Control for the last 10k. Decided to put 1.6 rockers and new valve springs and seals in. First time the covers have been pulled, I was very happy with the level of cleanliness. First two are the new parts.