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Taken to the cleaners

Could you please expand on your apparently disparaging reference to supermarket petrol as a contributory cause of lambda sensor failure?

Asked on 5 October 2011 by PF, Doncaster

Answered by Honest John
It does not keep the car's fuel system as clean as fuel with the additive package of Shell V-Power, which is the best fuel you can buy and virtually guarantees no fuel system problems from carbon deposits (as well as slightly increased power and a better burn at low revs which, if utilised, improves fuel economy).
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