Only about 89 miles on the break in. I read somewhere that before the rings are seated emissions could be higher. I had a shop put in the engine, I added fresh gas to the tank before I dropped it off at the shop. It didn't sit for the whole 1.5 I would run it periodically. Probably would have been a good idea to drain the tank, but that didn't happen. The truck was run several times after the tank was filled with the fresh gas. So it was mixed with the older gas.
