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Oct 16, 2007 10:31:05 GMT
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Thought I would try the expensive stuff the other day and I'm sure my old Celeste GSR ran better and didn't run out of fuel so fast. Sod the expense, ill try it again and see if my car likes drinking this stuff at £1.02  |
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Wrexham F.C. Pride of non league football!
White 1998 Fiesta Ghia
Lonsdale YD
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BiAS
Club Retro Rides Member
Insert witty comment here
Posts: 2,231
Club RR Member Number: 147
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BP Ultimate Faster and Longer!BiAS
@cheeqi
Club Retro Rides Member 147
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Oct 16, 2007 10:35:17 GMT
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Yep, I'm with you on this, mine gives more mpg on the high octane stuff and a touch more oomph.
Cost wise I think that due to the increased mpg it works out at about the same price per mile.
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(car+wheels)-rideheight=WIN
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Oct 16, 2007 10:52:02 GMT
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I'm not convinced about the diesel version of BP Ultimate giving extra MPG because I've never noticed any difference when I've used it in my Polo but the petrol version definitely made a difference for me when I had my Mk1 Golf.
I used to get just under 30mpg on supermarket fuel, 33 to 34 on Shell, 35 on normal BP and nearly 36 on the higher octane BP stuff. Not sure whether they called it Ultimate at the time.
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"Jeremy Clarkson, a man we motor enthusiasts need on our side like Lewis Hamilton's F1 car needs a towing ball and a Sprite Musketeer" My motor |
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Oct 16, 2007 10:57:04 GMT
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Have never found expensive juice worth it - perhaps it's because I drive feeble motors...
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1986 Citroen 2CV Dolly Other things. Check out my Blog for the latest! www.hubnut.org |
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kee
Posted a lot
Posts: 4,990
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Oct 16, 2007 10:59:11 GMT
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i use shell v-power, works very well.
i used to use supermarket cheapo stuff, then used shell cheapo, which i noticed the difference straight away, and was the same price, then onto v-power and it gets a wee bit more miles and makes it go a bit quicker.
the diesel stuff works on my colleagues car aswell
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Oct 16, 2007 11:01:50 GMT
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cant find it now but i saw an independant test on a website after having this discusion on the MB forum i use, you do ge more MPG but not enough to offset the cost of the fuel and non of the cars showed any extra power i think.
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Volvo back as my main squeeze, more boost and some interior goodies on the way.
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Oct 16, 2007 11:09:41 GMT
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Makes a difference with modern engines, which can re-tune themselves for higher octane fuels.
If you're worried about mpg, driving more gently will make a much bigger difference! I'm very sceptical on this one.
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1986 Citroen 2CV Dolly Other things. Check out my Blog for the latest! www.hubnut.org |
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kee
Posted a lot
Posts: 4,990
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Oct 16, 2007 11:27:25 GMT
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I'm not that fussed, it only adds up to about £2 more per tank.
hey did a test on a 500bhp+ engine in classic ford, shell v-power added 40bhp on cheapo supermarket fuel
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Oct 16, 2007 11:32:06 GMT
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As dollywobbler said, the main gains are to be had on engines that run with knock sensors and can advance their own ignition up to the maximum possible to take advantage of the higher octane.
In older injection and carbed cars, I reckon the only difference would be a cleaner burn which would help economy and emmissions, but i wouldnt expect a massive financial win, and certainly not any sort of usefull bhp increase.
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1986 Panda 4x4.
1990 Metro Sport.
1999 Ford Escort estate.
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Oct 16, 2007 11:33:40 GMT
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The Amazon's last couple of tanks of fuel have given a noticeably longer range (& therefore also mpg) than normal, due to a combination of having given the carbs set-up a good going over & also being almost entirely motorway driving. This may or may not be coincidence, but I've also been adding the Castrol Valvemaster with the octane booster to regular unleaded (which reminds me - I need to work out the extra pence per litre treated) purely for the octane boost not for the valve seats (or in the case of Amazons, the valve guides). Could that make any difference at all? Edited to add - just seen Dave's post so I guess that's answered  |
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Last Edit: Oct 16, 2007 11:51:37 GMT by Paul H
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Oct 16, 2007 11:38:41 GMT
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Its not so much the cost but my engine seems to run so much better on this stuff. I have noticed this whilst going up hills, 5th gear now where as before it was down to 4th.
Not sure why this is as I'm not an engine guru.
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Wrexham F.C. Pride of non league football!
White 1998 Fiesta Ghia
Lonsdale YD
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Oct 16, 2007 11:42:02 GMT
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I have had posh stuff in the van, not sure if it actually is more powerful running on it or whether its psycological! ;D It does feel to give it a little more ooomph!
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 it doesn't matter if it's a Morris Marina or a Toyota Celica - it's what you do with it that counts  |
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mull
Part of things
Posts: 296
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Oct 16, 2007 12:45:39 GMT
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Whenever I have run it in a diesel I have noticed no difference especially on new engines.
However used the petrol in the Golf and while not necessary more MPG it felt more responsive. The same happened when I was unfortunate enough to have a 1.8 petrol freelander.
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Oct 16, 2007 12:59:33 GMT
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I swear by V-power 98 octane, the bp stuff is only 97 octane and its more expensive lol
Ive only ever run my imps on it, you do notice such a difference probably due to the high compression ratio of the imp head i guess, worth getting a shell points car!
Matt
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markbognor
South East
 
Posts: 9,970
Club RR Member Number: 56
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Oct 16, 2007 13:04:35 GMT
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I'm convinced that i get better MPG with premium fuels.
But taking my tools out of the boot makes the most difference.
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Oct 16, 2007 13:06:49 GMT
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Looks like Ill have to give the V Power a go as well.
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Wrexham F.C. Pride of non league football!
White 1998 Fiesta Ghia
Lonsdale YD
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Oct 16, 2007 13:09:45 GMT
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Load of old rubbish, IMO.
My car seems just as happy running regular UL.
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Oct 16, 2007 13:17:26 GMT
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Load of old rubbish, IMO. My car seems just as happy running regular UL. With you on that one Mister Pog. Octane makes no difference to a fuels energy content, only it's ability to resist detonation. If the energy content is not raised (calorific value, BTU's whatever) then on an engine that is otherwise unchanged, how is it going to provide more power? It can't. An engine with raised compression/boost can take advantage of the higher octane rating to make more power but unless you are in some way tweeking your engine to make use of increased octane fuel then you're not going to be getting any extra power, unless you have an engine that normally runs on the edge of det anyway. |
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1962 Datsun Bluebird Estate - 1971 Datsun 510 SSS - 1976 Datsun 710 SSS - 1981 Dodge van - 1985 Nissan Cherry Europe GTi - 1988 Nissan Prairie - 1990 Hyundai Pony Pickup - 1992 Mazda MX5
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dclane
Posted a lot
Posts: 1,037
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Oct 16, 2007 13:37:19 GMT
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I seem to find the Saab doesn't like 95 octane. 97 and 99 octane's much better - in terms of economy and responsiveness. I currently use the Sainsbury's 97 octane, but Shell V-Power's good too. Mind you, I put the BP Ultimate (at 106.9p  ) in and it passed the emissions fine for its' MOT. |
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Last Edit: Oct 16, 2007 13:37:40 GMT by dclane
Current vehicle collection:
2006 Saab 9-3 Aero convertible - in mid-life crisis yellow
No new retro as yet ... all attempts to sneak one onto the drive have failed.
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oldone
Part of things
www.exile-rotorsport.com
Posts: 149
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Oct 16, 2007 21:54:01 GMT
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As I run premix in the Rotary,I have to go for the higher octane rating,as the premix lowers the octane of the fuel.V-Power works the treat for me .
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Oldone's disclaimer: "It is very difficult to convey sarcasm, humour, inuendo and other subtleties of speech over what is essentially a text-only-communication tool. please take all posts with a pinch of salt" www.oldones.co.ukwww.oldones.co.uk |
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[*]
) in and it passed the emissions fine for its' MOT.