OUBLE THE. MILEAGE
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OM next Thursday, Shell-Mex and B.P. Ltd. will be marketing a new ne lubricating oil in the U.K. Called Visco-static Longlife, it is intended )etrol engines and can be used under iperating and climatic conditions for )le the normal oil change period with iaximum limit between changes of 30 miles or one year.
ttensive field and bench tests have carried out to prove that the new vill perform completely satisfactorily tese circumstances and, in fact, it has • marketed on the Continent since the ig of this year.
isco-static Longlife is a Supplement tulti-viscosity oil. The main reason it can be used for longer periods is one of the new additives it incorporis a unique dispersant component. breaks down the insolubles collected engine oil into very fine particles :h can be held in the oil instead of g deposited as sludge. The oil also additives giving an increased detery life and improved stability.
[though not primarily intended for :1 engines, the oil can be used in 1, but with normal change periods. If Lrticular diesel operates satisfactorily oil of a lower quality than a Suptent 1, then extended change periods apply.
etaii price will be 3s. 54-d. a pint and s. 6d. a gallon.