Premium over Regular Unleaded?

Not for the zed, but with regular by or even asda fuel my engine management light would not go off. I thought the lamda sensor was knackered. For some reason I changed to premium fuel and I have never had the light up for years. That alone for me means I will not use anything else.
 
ronk said:
If you do a search on the forum, the octane thing has been done and no conclusion formed!

Yep... Many topics have gone that way. There was a thread a couple of years ago listing the topics that fall into that category. Think it was called 'done to death' :lol:
 
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