UPPER CYLINDER LUBRICATION.
THE problem of upper cylinder lubrication has long engaged the attention of technical experts, but hitherto none of the bigger national oil companies has “officially approved” it— still less evolved an oil specifically designed for this purpose, and capable of being used on any make of car without :,tructural alterations.
C. C. Wakefield and Co., however, have now introduced a new grade of oil known as ” Castrollo,” specially blended for this purpose. No special fitment is required and the cost per mile is negligible. Effective lubrication of the moving surfaces at the top of the cylinder is obviously very desirable in any car, how
ever old, and it is still more important when running in a new car. Furthermore, where there is no risk of these parts becoming dry, the car can be run at higher speeds in perfect safety.
” Castrollo ” is sold in two sizes—the quart tin, containing sufficient oil to treat 160 gallons of petrol, casting only 5s. 64., and the pint tin selling at 3s.