Hello all,
from memory, here are a few recollections concerning temps and H20...
Water soluble oil was added to the spray-bar water to protect the aircraft fuel pumps and plumbing from the corrosion and friction effects of not pumping gasoline.
Ratio was about 80:1 I think ,,,one quart in 20 gallons of water....
Aircraft spray bars we fabricated from "streamline" tubing and we used commercial spray nozzles designed for crop spraying...
Round tubing in an X pattern is a good place to start...
Oil Temps: with mineral based oils, temps under 225 degrees F are fine,,,,225 to 250 are ok but the oil is oxidizing and should be changed more often than normal,,,,
Temps above 250 degrees are "cooking" the oil, breaking it down rapidly, and it should be changed immediately....
High horsepower engine need heavier weight oils if operating at high oil temps...
Mario Andretti won his first Indy with the oil temp running 300 to 350 F for the entire race....He said he was expecting it to blow any second, but it never did,,,go figure !
Robert "Smitty" Smith