OIL PRESSURE

Dominion, Volume 30, Issue 159, 2 April 1937, Page 15

OIL PRESSURE

AU instruction books lay stress upon the necessity for maintaining a certain minimum oil pressure. No pressure, or a very low pressure, is a danger signal calling for investigation. The first thing to verify, of course, is whether there is any oil in the sump. Should this be in order, the main filter may be clogged with sludge, a pipe broken, gauge sticking, or the oil in use may be of poor quality or insufficient viscosity for your motor when at normal operating temperature. In rare cases the regulator tends to stick, or a piece of foreign matter might be lodged on the seating or between the plunger and its bore. Dismantling and cleaning should rectify the trouble, or the regulator spring might need additional tension to produce the desired pressure. Old engines with ■worn crankshaft, loose bearings, and a worn oil pump will invariably suffer loss of pressure when hot. COSTLY PETROL Research chemists in Ohio State University, U.S.A., are working on petrol costing between £32 and £BOO per gallon—of which they use only an ounce at a time. Although American motorists attach little importance to fuel consumption, they might raise an syebrow at this. The fuel i s so dear oecause of the high cost of the 125 lombinations of hydrocarbons used in ;his attempt to discover the ideal notor spirit.

WHERE BICYCLES ARE CONTROLLED .

Bicycles are subject to special legislation in the town of Cumberland, Maryland. To use a bicycle one must obtain a special permit from the Department of Safety, and before it is granted, the machine is examined for general mechanical safety, efficient brakes, lights and warning device. . The special traffic rules governing bicycles include clauses forbidding trick riding and “double-donkeying” (as it is termed in America), and recommending that busy streets be avoided whenever possible.