So why Optimax

[lady topaz]

Right you technophobes, why am I filling up with Optimax. Its only on recommendation, but I dont notice a difference. Or does it all happen in the engine?

[lady topaz]

andyvdg said: I think the speed 6 runs a bit smoother at lower revs on higher octane fuel, but you won't get any more power higher up. It is supposed to keep the engine clean inside. I read the article in EVO when they ran cars on cheap petrol and Optimax, and then stuck a probe inside to have a look - you really could see the difference.

Since then I've always tried to use expensive fuel, mostly Optimax. I'm told however that the bits added to the fuel that make the octane higher only last a week before going off....

Cheers,

Andy.

I'm lucky if it stays in tank a week, using it daily for work.