Page 5 Advertisements Column 1

Press, 1 February 1988, Page 5

WOT OS TOSS WHAT BS SMUT SUL PHKLEM TO HELP ML ««? FIX IT? Recently there have been reports The search for an explanation that some sensitive engine models in and solution has been the subject of a small number of countries have intensive research by our laborasuffered inlet valve burning or tories. Together with other members' sticking. of the motor industry, we are workResearch has revealed that this ' ing hard to identify exactly what is damage has no clear single cause. causing valves to malfunction. It could involve climatic condi- While the problem is not yet fully tions, engine design, valve material, understood, our latest research driving patterns, and gasoline suggests that the additive package in properties. Formula Shell, in combination with Any one, or a number of these the lead antiknock compound, can factors, may be responsible. in some circumstances, give rise to an increased incidence of inlet valve failure. Although inlet valve failure was around long before the new generation of petrol additives, and is limited to a tiny percentage of cars, it is still of great concern to Shell that our leaded petrol be associated with any problem whatsoever. Despite the very limited number of customers who have been affected, we cannot continue to market a formulation which might, in certain circumstances, be harmful to any customer’s vehicle. That’s why we are no longer adding the ‘spark aider’ additive package to our leaded petrol. Formula Shell unleaded, which has been completely free of problems, will continue unchanged. We invite any Shell customer who has had an engine problem believed to be caused by Shell petrol to contact us so that it can be investigated. Phone Wellington (04) 720-080 collect and ask for Public Affairs. Ibu can be sure n 21442 OGILVY -4 of Shen ,5 d ?