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.
2,394 miles from Honolulu, Hawaii to San Francisco, California, on the U.S. west coast. Hawaii is further south than any other point within the United States. So the distance to the west coast depends on to where you measure. For example, although Los Angeles is further south than San Francisco, the Honolulu - Los Angeles distance is greater, at 2,560 miles.