Did U.S. loss planning include fleet oilers?

If the prewar U.S. Navy planned for heavy carrier losses, did it make the same assumption about fast oilers?

To an extent. It expected to lose many support ships but hoped not to lose the whole oiler force because replacement speed was uncertain.

U.S. planning anticipated substantial losses among fast oilers. The limit was industrial timing: planners did not know how quickly such specialized support ships could be replaced. Losing all of them would therefore threaten the fleet regardless of how many combatants survived. Logistics vessels were part of battle-force resilience rather than an unlimited rear-area resource.