BTW, has anybody else had an increase in blue smoke on cold startup with ULSD transition? I have read the report from the State of Georgia, that they had injector seal/o-ring leakage when they switched from LSD to ULSD. Once the injector seals/o-rings were changed and experienced exclusively ULSD, there were no issues. I would have expected a lot more complaints about this from school bus fleets and 'strokers if it were that common.