The economics of petroleum . n, however, is sufficient toshow that automotive demand has cut sharply across the field, givinga new aspect to the situation. Close study of Figs. 82-85 will indicatemore strikingly than words the relative importance of the various 176 LUBRICATING OILS demands and the highly significant position attained In- the; require-ments of automotive transportation. IIOO 800600 r^:*i2- 0^ U. S. PRODUCTION OF uJgS 400300 - lUrtw ^ —~ / EXPORTS coNSur [PTION --^^ ^ ^ / 200 ~y ^ ^^ ../ y A^x ^ <:jy y / 30 2015 108 64 RAILRO ,0 002 SOMP^i^ ^y^^-_^ y / y ^ y / y^^ // /^ # / 4
The economics of petroleum . n, however, is sufficient toshow that automotive demand has cut sharply across the field, givinga new aspect to the situation. Close study of Figs. 82-85 will indicatemore strikingly than words the relative importance of the various 176 LUBRICATING OILS demands and the highly significant position attained In- the; require-ments of automotive transportation. IIOO 800600 r^:*i2- 0^ U. S. PRODUCTION OF uJgS 400300 - lUrtw ^ —~ / EXPORTS coNSur [PTION --^^ ^ ^ / 200 ~y ^ ^^ ../ y A^x ^ <:jy y / 30 2015 108 64 RAILRO ,0 002 SOMP^i^ ^y^^-_^ y / y ^ y / y^^ // /^ # / 4 f/ / i/ ^ v f 2 / / /^ / / 1 / __^ ?^ DECREASE?flOO^+ 80+ 601+ 40{*? 200 i- 10 20 {- 30 40 ?I- 505t 1911 1912 1913 1914 1915 1316 1917 1913 1919 1920 1921 Fig. 82.—Trend of supply and demand f<jr lubricating oils in the United States, 1910-1920. Exports of Lubricating Oils.—The growth in exports of lubri-cants during the past ten years is shown in Fig. 82, while Fig. 85 indi- EXPORTS OF LUBRICATING OILS 177. Fi( 1911 1912 1913 1914 1915 1916 1917 1913 1919 1920 S3.—Percentage analysis of the demand forlubricating oils, 1910-1920. cates the size of exports as compared with the domestic , a third of our lubricating oil is sent abroad. A large pro-portion of the worlds ioo;«pmachinery is lubricatedby American oil, 411million gallons of lubri-cating oil being exportedin 1920 for this to the grades of oilsent abroad, a large pro-portion is cylinder stock,because the foreign prac-tice, especially on theContinent, makes use ofhigh-pressure, superheat-ed steam demanding ahigh-grade, high-testcylinder stock. It hasbeen stated that prob-ably as much as 80 per cent of our cylinder stocks are or not this figure is correct, it is evident that a large share ofour heavy-bodied lubricating oil and the cream of the American output goes into foreigntrade. The bearing ofthis fact upon the do-mestic situation, andespecially upon thecourse
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