DAILY TELEGRAPH (UK): Honest John's Agony column: “Most readers report improvements on Optimax, but Ofcom has censured Shell for claiming performance benefits.” (ShellNews.net) 15 Jan 05 

(Filed: 15/01/2005)

Your questions answered by the dealer you can trust

Arctic role

You often champion the virtues of good petrol, particularly Shell. I agree that the company's premium unleaded is excellent but am not so sure about Optimax, which I started using in 2002. My 1991 Volvo 940S continued to run perfectly, as always, but its temperature gauge barely moved - even though I was towing a 16ft caravan. I solved the problem by returning to premium unleaded.

D.T., Stretton

A 940 is a crude old battle-axe designed to survive Arctic winters and collisions with elks. Most readers report improvements on Optimax, but Ofcom has censured Shell for claiming performance benefits. 

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