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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Graph detailing heat rejection to Prestone during performance characteristics tests for a GV-1570-D Conqueror engine.

Identifier  ExFiles\Box 173\3\  img215
Date  23th February 1932 guessed
  
WRIGHT AERONAUTICAL CORPORATION
CURVE 913
GV-1570-D 6.2:1 C.R. - CONQUEROR ENGINE NO. 22006 - HEAT REJECTION TO PRESTONE DURING PERFORMANCE CHARACTERISTICS TESTS - FEB. 9 and 10, 1932. - PROP. LOAD AND FULL THROTTLE

Axes Labels:
Left Y-axis (top): Prestone Outlet Temp. °F.{Mr Friese}
Left Y-axis (bottom): Heat to Prestone B.T.U./Min.
Right Y-axis (top): Prestone Flow - Lbs./Min.
Right Y-axis (middle): Prestone Temp. Rise - °F.{Mr Friese}
Right Y-axis (bottom): Ratio Heat to Prestone Heat in B.H.P.
X-axis: Crankshaft R.P.M.

Graph Curve Labels:
Prestone Flow - Prop. Load
Prestone Flow - Full Throttle
Prestone Outlet Temp. - Prop. Load
Prestone Outlet Temp. - Full Throttle
Prestone Temperature Rise - Full Throttle
Prestone Temp. Rise - Prop. Load
Heat to Prestone - Full Throttle
Heat to Prestone - Prop. Load
Ratio - Prop. Load
Ratio - Full Throttle

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