Quote:
Originally Posted by wta99
Hey. I have travelled 2000 miles in the 5 weeks since I took delivery of my Cayman. The mpg is not great. I hope that it may still improve. I was told by the dealer to use "Super" unleaded (here in the UK that means 97 octane, I think?!) which is quite a bit more expensive that conventional premium unleaded (which I think is 95 octane). I was wondering, what do you guys use? Should I strictly use Super, or alternate with Premium?
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When you open the fuel filler flap, you will see a sticker that tells you to use Super Unleaded 98-RON fuel. Hence, you should use that. I use Shell V-Power which is 99-RON.
Using the correct fuel as recommended by Porsche will give you better performane and better mpg.