Way back circa 1973 was in cockpit of a USAF 707 tanker out of Hickham at max weight for met conditions.
Water methonol injection used for T/O and initial climb involving a wing tip almost scaping turn away from Honolulu.
Injection ran out progressively throuh the 4 engines readily felt by aircraft yaw.
We wouldn't have made it if the injection had not worked as rotation was VERY close to end. Indicated great reliance on the injection system.
Tanker supported F111s on direct flight to Australia.