COST OF USING POWER ON WHEAT FARMS IN OREGON 15 
TABLE 11.—Fuel and cylinder oil requirements for tractors of different sizes, 
3-year average 1920-19227 42 tractors, 1920; 45 tractors, 1921; 40 tractors, 
1922 
Kerosene | 
| Gasoline Distillate Cylinder oil 
| $ | Quantity | £ Quantity | = Quantity | = Qvantity 
& used per | & used per | 4 used per | = used per 
me tractor BD tractor a tractor | "2 tractor 
Size of tractor rs] =I ; Ss Si 
a | -mo Be Zo aS 
= | 38 fas [s-}3e h | 3s 5 
= n | ~ S 2 a ~ S on” ~ S as _ iS) 
Sees te ose bees Soh g hs) B™ | Broa 
@|\fonp jaro 3 > |23/5 > |SS5)s > | Ss 
— a = Ay a ay | Ay e | ral ow = A. a, 
a a 
sepower: N No. |Galls. |Galls.| No. |Galls.|Galls.| No. | Galls.|Gails.| No. | Gails. | Galls 
ee f SR ee See 5 = 364 19 16 542) 20 5 | 885 24 Dy 34 i) ¥aS 
Ay Siiaenas= fax ie es 17 16 }1, 136 = 5 9) (LANSREE Bl Vesela Set bate ea 1 75 33 175 Tt |S 
Je: ee pes OA TTE 10 d 3, 811 AGS Sees elem 5 2,415 48 10 132 2. 0 
AQ ep BF ae 45 38 /3, 869 ay Fal Cera ee ee ae 7 5, 366 56 45 148 139 
Ect es ee BIT) weaned Beet sl gd id ek ok ee 513-7661 73 | 30| 151 | 28 
TAT SIZES SSS 127 88 |3,071 > 52 16 | 542 20 | 23 (3, 206 | 53 127 116 2.0 
| I 
1 Weighted averages, for example, the three-year average quantity of gasoline used per tractor was obtained 
by dividing the total gasoline consumed during the three years by the total number of tractors using the 
gasoline. The same method of averaging was used throughout this bulletin wherever the figures were 
possible of being weighted. 
The average costs of fuel and oils per tractor and per 10-hour 
day are given in Table 12. 
TaBLeE 12.—Cost of fuel, oils, and grease for tractors of different sizes, average 
1920-1922; 42 tractors, 1920; 45 tractors, 1921; 40 tractors, 1922 
Average expense per tractor 
; eater 
| | | 
| | 
| Other oils and 
| 
uf | Gasoline Kerosene Distiilate Cylinder oil grease 
Size of tractor | 
| | | | | | 
| | Per. | Per jeer Per | Per 
Se ete ep Obes one | toe | Pes ee 
| SE | day | > day : day | > day | * day 
Horsepower: | Dolls. | Dolls. | Dolls. | Dolls. | Dolls. Dolls. | Dolls. | Dolls. | Dolls. | Dolls 
16 ke 84. 25 4,33 | 119.19 4. 45 200. 00 5.53 | 30.44 eat 3. 96 0. 14 
7z,| Vinee, Sei | 316. 15 10. 53 0 0 224.00 | 7.59 61. 88 1.53 32. 65 81 
Jo pre eae rae ae } 1,011.80 | 12.17; 0 0 463.80 | . 9.19 | 127.60 1.91 | 72.80 | 1. 09 
AL ee ee | 1,026.28 | 13.62 0 0 1,159.57 | 12.08 | 121.89 1.55 75. 22 96 
| eee see nee 1. 794.413 | 14 92 0 0 828.40 16.10 | 146.17 | 2.72 86. 47 1.61 
All sizes_____| 804. 69 | 13. 43 | 119.19 | 4.45 | 687.04 | 11.35 | 102.04 1.80 57.96 1.02 
CASH REPAIRS AND LABOR MAINTENANCE 
The item of cash repairs, which includes the cash outlay for new 
parts and skilled labor in repair and machine shops off the farm, 
as well as the amount and cost of the labor spent by the tractor 
owner and other farm and expert labor on the farm in overhauling 
and repair work on tractors of different sizes is shown in Table 13. 
The number of tractor owners who spent some time in repair work 
on their tractors was relatively greater for the small than for the 
larger sizes, whereas the number who hired other labor was rela- 
tively greater for the large than for the smaller sizes. 
