Guest andy911 Posted May 19, 2007 Share Posted May 19, 2007 I have read with interest about the fuels you are all using. However as a new comer to the fantastic world of 911's I use an additive at fill up's ( the squeezy bottle stuff made by castrol I think). Could I use super unleaded or vpower stuff so I don't have to mess around with the stuff I use.. Andy Link to comment Share on other sites More sharing options...
johndglynn Posted May 19, 2007 Share Posted May 19, 2007 Why do you use an additive? The cars will run on 2 star if needs be. I have used boggo 95, 97/98 and Silverstone 100 in both of mine over the last few months, no difference in the way it runs on any of them. Only one I do notice a diference on is Total Excellium in the SC. It is instantly livelier on that, no doubt about it, so I get it if I pass a Total garage and am getting low. Wouldn't make a special trip for it though. If your question is 'can I use high octane fuel with no probs', then the answer is yes, use whatever you want. Link to comment Share on other sites More sharing options...
Guest andy911 Posted May 20, 2007 Share Posted May 20, 2007 Why do you use an additive? The cars will run on 2 star if needs be. I have used boggo 95, 97/98 and Silverstone 100 in both of mine over the last few months, no difference in the way it runs on any of them. Only one I do notice a diference on is Total Excellium in the SC. It is instantly livelier on that, no doubt about it, so I get it if I pass a Total garage and am getting low. Wouldn't make a special trip for it though. If your question is 'can I use high octane fuel with no probs', then the answer is yes, use whatever you want. It's what the last owner recommended, so I just carried on using it. Link to comment Share on other sites More sharing options...
Von Twinzig Posted May 20, 2007 Share Posted May 20, 2007 It's what the last owner recommended, so I just carried on using it. He was a twit! Link to comment Share on other sites More sharing options...
Bertroex Posted May 20, 2007 Share Posted May 20, 2007 (edited) Well, i can't comment whether last owner was a twit but as the 911 -and in fact all porsches since the mid fifties- have hardened valve seats, it is no problem to run your car on unleaded fuel. Like John already said, the minimum octane rating these cars need is 91 ron; standard unleaded is 95, super unleaded is 97 or 98 (v power)or even 99 (tesco's). I have about 27 mpg with 95, and with 98 i can nudge 31 mpg on a motorway trip. ergo: I use my car a lot and I just fill it with 95 and if I feel generous, I either fill up a tank of 99 or I get a mars bar. bert Edited May 20, 2007 by Bertroex Link to comment Share on other sites More sharing options...
dickster Posted May 20, 2007 Share Posted May 20, 2007 Same here, mine is a weekend car so generally gets treated to high octane stuff. Link to comment Share on other sites More sharing options...
GaryH Posted May 20, 2007 Share Posted May 20, 2007 Only one I do notice a diference on is Total Excellium in the SC. It is instantly livelier on that, no doubt about it Shell V-Power (formerly Optimax) do nothing for SHU then JG ? Link to comment Share on other sites More sharing options...
Guest andy911 Posted May 20, 2007 Share Posted May 20, 2007 Thanks all for that...well now I know, as for the lead replacement I use....it's history.. cheers Link to comment Share on other sites More sharing options...
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