[GreasyLikeaBurger]

If your injectors were running that rich, I would suggest doing an oil change. The manufacturer I work for had issues with some of our high end cars running rich at start up. What was happening was, the cars were sitting at the port waiting on delivery and they kept starting them and moving them a really short distance. Only a few minutes at a time. So over a few weeks of that, the oil became thinned out. We actually had issues doing the PDI, with the oil gauge showing really low pressure. Had to do several oil changes to clear them out.