MOTOR TRUCKS ON EASTERN EARMS. 



27 



are shown in Table XVI. The average price which these men paid 

 for gasoline at the time they made their reports (January and Feb- 

 ruary, 1920), was 27 cents per gallon, and the average price of lubri- 

 cating oil was 65 cents per gallon. The costs per mile traveled are 

 computed from these figures. No attempt was made to learn the 

 amount and value, of the grease used, but in any case its value should 

 be only a fraction of that of the lubricating oil. 



Table XVI. — Gasoline and oil requirements of trucks of different sizes. 

 [Gasoline at 27 cents per gallon; lubricating oil at 65 cents per gallon.] 





Size of truck. 



Gasoline. 



Oil. 



Total 

 cost per 





Miles per 

 gallon. 



Number 

 of reports. 



Cost per 

 mile. 



Miles per 

 quart. 



Number 

 of reports. 



Cost per 

 mile. 



mile for 

 gasoline 

 and oil. 



i-ton 



14.8 

 12.1 

 11.2 



9.5 

 8.0 



138 

 92 



332 

 64 

 75 



$0. 018 

 .022 

 .024 

 .028 

 .034 



.59 

 58 

 48 

 49 

 40 



93 

 71 

 281 

 54 

 62 



SO. 003 

 .003 

 .003 

 .003 

 .004 



$0. 021 





.025 





.027 



1J and 

 2-ton. . 





.031 





.038 







TIRES. 



Each man was asked to state what he paid for tires and the mileage 

 obtained. The cost per mile for tires as shown in Table XVII is 

 figured by simply dividing the average cost per tire by the average 

 number of miles which the tire runs, and multiplying this result by 

 four to obtain the cost for four tires. According to the estimates of 

 318 men, the pneumatic tires on these trucks run an average of 4,500 

 miles, and according to the estimates of 206 men the solid tires run 

 an average of 8,200 miles. Such a large percentage of the ^-ton 

 and f-ton trucks used are equipped with pneumatic tires that no 

 figures for solid tire costs for these sizes are given, and such a large 

 percentage of the trucks over 1 ton in size are equipped with solid 

 tires that no figures for pneumatic tire costs for them are shown. 



An allowance for the mileage obtained from the tires with which a 

 machine is equipped when purchased must be made in order to deter- 

 mine the net tire cost to the user, as the cost of the first set of tires 

 is included in the purchase price of the truck. 



According to the estimates of these men the percentage of the total 

 mileage of the trucks obtained from the tires with which they are 

 equipped when purchased is as follows: 



Pneumatic tires on the |-ton trucks run 18 per cent of the total mileage. 



Pneumatic tires on the f-ton trucks run 17 per cent of the total mileage. 



Pneumatic tires on the 1-ton trucks run 19 per cent of the total mileage. 



Solid tires on the 1-ton trucks run 36 per cent of the total mileage. 



Solid tires on the 1^- and lj-ton trucks run 40 per cent of the total mileage. 



Solid tires on the 2-ton trucks run 26 per cent of the total mileage. 



