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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).
Monthly log of vehicle oil consumption, tracking mileage and oil added to calculate MPG.

Identifier  ExFiles\Box 142\3\  scan0053
Date  9th December 1936 guessed
  
1204

Re: Oil Consumption.
- - - - - - - -
3-AZ-38 - Ph. 111.
- - - - - - - -

AUGUST.
Speedo reading. oil added.

1060. 1 qrt.
1121. 1 qrt.
1740. 4 qrts.
2303. 2 qrts.

Miles for month - 1367 to 2 galls of oil = 683.5 m.p.g.

SEPTEMBER.
2838. 2 qrts.
3227. 3 pts. During this month we carried out a test
3673. 2 qrts. over 668 miles and added 3 pints to bring
3860. 2 qrts. the oil to its level = 1776 m.p.g.
4534. 3 qrts.
4760. 1 qrt.

Miles for month - 2473 to 2 galls 3 qrts 1 pt. = 909 m.p.g.

OCTOBER.
4816. 1pt.
5743. 1 qrt.
5773. 1 qrt.
5956. 2 qrts.
6146. 1 qrt.
6384. 1 qrt.
6815. 1 qrt.
7123. 2 qrts.

Miles for month - 2454 to 2 galls 1 qrt 1pt. = 1032 m.p.g.

NOVEMBER.
7263. 1 qrt.
7464. 1 qrt.
7722. 1 qrt.
8003. 1 qrt.
8176. 1 qrt.
8421. 2 qrts.
8926. 2 qrts.
9647. 2 qrts.

Miles for month 2564. to 2 galls 3 qrts of oil = 932 m.p.g.
  
  


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