davidcross
New member
hi, have just taken delivery of a 2yr old 997s. shud i run it on premium unleaded only or is the normal unleaded ok?? tks
fuel
- Thread starter davidcross
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davidcross
New member
your right it does recommend that one. i just wondered if it made a big difference...tks
davidcross
New member
also allan do you think i will notice a big power difference using different fuel and is there a big difference in price or is it more about whats best for the engine??? tks
Sorry I can't answer the question re performance as I've never carried out a controlled experiment but I'm a firm believer in doing what the manufacturer recommends, at least while under warranty, then if anything does go wrong I can with hand on heart say I didn't do it [
]. However, I suspect difference in performance, although present, might be hard to detect during normal use and I also doubt that any improvements in MPG will justify the price premium [&:]. The only hard data I can give you is that over 5,800 miles I've averaged 24.24 MPG and 81% of these miles have been driven on Shell V Power.
davidcross
New member
tks alan. going to spend next 2 days getting to grips with it before i sadly have to leave it garage"d for a week as im on holiday. my mates got a 996 turbo and uses autoglym to wash and polish it. he also got some wheel cleaner. i have noticed people talk about swisswax. what do u use and is there a big difference in all these thngs do u think?
Drifting off topic here you may want to post this on either the 997 or concours forum as you will get a wider range of views. However, I use Zaino which is not very popular in the UK but is generally considered the best by professional detailers in the USA. It's not cheap and is very labour intensive but I have plenty of time being retired and I'm pleased with the results. Should you consider this here are a couple of web sites to check out: http://www.zainostore.com/Merchant2/merchant.mvc http://www.advancedcarproducts.com/products.asp?cat=11
BTW next year try to arrange a driving holiday - I'm off to the Alps next moth [
].
davidcross
New member
many tks
unclewinks
New member
Why dont you drive the 20 miles,any excuse
our nearest is close to that,Tanya and I always fill up at the weekend
ready for the next
our nearest is close to that,Tanya and I always fill up at the weekend
ready for the next
garyw
Moderator
I'd put anything in other than fresh air []
I would imagine that it'll be fine with the 97 and when passing fill on V-power - I hope so as thats what I do []
My nearest Shell station is about a simialr distance, so I time fill ups with me going that direction, by eck! I'm passing by it tomorrow []
I find the cars use a lot of fuel, especially when you've just had them [] [8D]
garyw
]I would imagine that it'll be fine with the 97 and when passing fill on V-power - I hope so as thats what I do [
]My nearest Shell station is about a simialr distance, so I time fill ups with me going that direction, by eck! I'm passing by it tomorrow [
]I find the cars use a lot of fuel, especially when you've just had them [
] [8D]garyw
In my experience 97 or 98 octane makes not a scrap of difference.
Shell pulled out of our area years ago - our nearest station is now 40 miles away.
I tend to use BP Stations where possible hereabouts and stick to higher volume sites with busy throughput as I've found quality at smaller sites can sometimes be erratic.
The engine comes with a brilliant software package and includes knock sensors that guard against damage from poor fuels. In extremes, it retards ignition and prevents detonation. You then notice some reduced engine performance, but it readjusts to optimise better fuel later. []
Hope this helps.
Regards,
Clive.
Shell pulled out of our area years ago - our nearest station is now 40 miles away.
I tend to use BP Stations where possible hereabouts and stick to higher volume sites with busy throughput as I've found quality at smaller sites can sometimes be erratic.
The engine comes with a brilliant software package and includes knock sensors that guard against damage from poor fuels. In extremes, it retards ignition and prevents detonation. You then notice some reduced engine performance, but it readjusts to optimise better fuel later. [
]Hope this helps.
Regards,
Clive.
Great link and interesting, but as you say Alan, it's an old one and Optimax is not now available. [8|]
There's loads on the interweb regarding Shell v BP.
I would certainly use Shell when available and at a sensible cost, but wouldn't drive miles out of my way or pay a large premium to get it.
The OP asked if 97 is OK in the absence of 98. It'll be fine - in the real world, I can't discern any difference. The car will also run OK on 95 octane if necessary. Getting a tankful of clean burning fuel is the main priority IMHO.
See you all tomorrow! []
Regards,
Clive.
There's loads on the interweb regarding Shell v BP.
I would certainly use Shell when available and at a sensible cost, but wouldn't drive miles out of my way or pay a large premium to get it.
The OP asked if 97 is OK in the absence of 98. It'll be fine - in the real world, I can't discern any difference. The car will also run OK on 95 octane if necessary. Getting a tankful of clean burning fuel is the main priority IMHO.
See you all tomorrow! [
] Regards,
Clive.
Helen Goff
No.1 Poster
don't have an awful lot of choice around here other than to use Tescos. used it in all my Porsches and have never had any trouble whats so ever. i will however top up with shell when ever i happen to be passing one but theres no way i'm driving miles out of my way just for petrol.
V-Power = Son of Optimax.........[
]It would seem that higher octane fuel is desirable, particularly in turbocharged engines, as it provides for a much more controllable burn. But,with the all singing all dancing computers these days, they will run on most things short of chip fat I imagine!
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