After the service, I took a look at the fluids in the car. There is a tank marked coolant with F and L marks on it, and the the level of fluid in this tank was (significantly) below the L mark - it looks like there are about two cups total at the very bottom.
This means that you can book a round-trip ticket to Hawaii from anywhere Delta flies in the US, Canada, Mexico, Puerto Rico, or US Virgin Islands using Korean Air miles for only 25,000 miles in coach or 45,000 miles in Business Class.
American Airlines = 20,000 miles MileSAAver Off Peak (current price rises to 22,500 miles effective March 22, 2016. Delta Airlines = 30,000 miles or more. American Airlines increases to 22,500 miles each way for MileSAAver Off Peak economy class awards between the USA and Europe as of March 22, 2016. The miles increase is relatively minor at 12.5%. The bigger change is the reduction in dates for Off Peak MileSAAver award travel between the USA and Europe.