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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).
Low-temperature flow test conducted on Mobiloil A and three types of Bijur oils.

Identifier  ExFiles\Box 27\1\  Scan119
Date  2nd June 1929 guessed
  
RE: LOW TEMPERATURE FLOW TEST ON BIJUR OILS

We have made flow tests on the new Mobiloil A and three types of Bijur oils, in the bottles supplied by Mr. Bijur, with the following results:

Temperature of Oils at time of test 5°F:

Time to flow in seconds:
Mobiloil A----------------37 secs.
Bijur #130 ----------------48 secs.
Bijur Mod. Heavy ----------102 secs.
Bijur #1------------------127 secs.

The comparative characteristics of Mobiloil A, old and new, are as follows:

Old New
Viscosity 100°F ------- 567 secs. 740 secs.
" 210°F ------- 62 secs. 62 secs.
Flash ----------------- 378°F 398°F
Fire ------------------ 430°F 448°F
Cold Test ------------- 17°F 2°F

In making the flow test, small glass bottles, 4" high x 1-5/8" square, are half filled with oil. They are put in the Frigidaire and left until the oil comes uniformly to the required temperature, preferably overnight. The bottles are then tipped on one side and the time required for the oil to flow to the end of the bottle noted. This time is recorded as the "flow" value. This value will vary of course with different bottles.

R.J. Allen

FLOW TIME
  
  


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