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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).
Record of oil consumption and mileage calculations over several months.

Identifier  ExFiles\Box 142\3\  scan0054
Date  9th December 1936 guessed
  
1204

Re: Oil Consumption.
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3-AZ-22 - Ph. 111.
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[underline]AUGUST.[/underline]
[underline]Speedo reading.[/underline] [underline]oil added.[/underline]
263. 1 qrt.
579. 1 qrt.
836. 1 qrt.
1471. 5 pints.

Miles for month - 1208 to 1 gall. 1qrt 1pt. = 872 m.p.g.

[underline]SEPTEMBER.[/underline]
2564. 1 qrt. Test made over 879 miles, 2 quarts added
2900. 1 qrt. to bring to 2 gallons. = 1758 m.p.g.
3060. 1 qrt.
3531. 1 qrt.
3939. 1 qrt.
4051. 1 qrt.

Miles for month - 2179 to [strikethrough]1 gall[/strikethrough] 2 qrt. = 1452 m.p.g.

[underline]OCTOBER.[/underline]
4635. 1 qrt.
5076. 2 qrts.
5700. 1 qrt.
6207. 1 qrt.
6435. 1 qrt.
6543. 1 pt.

Miles for month - 2580 to 1 gall. 2 qrts 1 pt. = 1588 m.p.g.

[underline]NOVEMBER.[/underline]
6631. 1 qrt.
6927. 2 qrts.
[underline]7138.[/underline] 1 qrt.
7639. 2 qrts.
7758. 2 qrts.
8655. 1 qrt.
9457. 2 qrts.

Miles for month - 3826 to 2 galls 3 qrts. = 1392 m.p.g.
  
  


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