30th July 1948, Page 34
30th July 1948
Page 34

Page 34, 30th July 1948
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Lubricating Oils
The Significance of S.A.E. Numbers • By E. V. PATERSON, A.M.I.Mech.E., M.S.A.E., M.I.Pet. L UBRICATING oils for motor vehicles are frequently classified according to their......