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.
Examples of United's Mileage Plus awards that now require more miles for flights operated by United: 1  The lowest-level award tickets to Europe are unchanged for economy, but now require 15,000 additional miles for business class (115,000 round trip) and 25,000 more for first (160,000 round trip).