BP Diesel ultimate smells different to run of the mill fuels, you get the identical smell if you put Millers additive in the tank.
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So does the petrol version GB, smells sweeter, with a light flowery bouquet, and a hint of pearl drops!
Seriously though, it contains additives that help clean the injectors. But its only worth it on a performance engine that alters its timing map to suit, or if you're constantly only doing short journeys that gum the injectors up. But then I suppose you could run an injector cleaner through it every now and then.
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...or if you're constantly only doing short journeys that gum the injectors up. But then I suppose you could run an injector cleaner through it every now and then.
Well now, this is interesting. I only do short journeys, and lots of them too. Usually less than 10 miles, usually 10-20 minutes of driving. The only time I do long journeys is for summer trips or visiting my dad who lives 2 hours drive away.
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I only do short journeys, and lots of them too.
It sounds like your engine could do with a clean. If you're only doing short journeys, the injectors will be dirty. Also, if the engine doesn't get to its full operating temperature and turned off, there will be condensation inside the engine which will make the oil more acidic and less able to do its job, it will also get dirty more quickly as the combustion by- products won't have had time to burn off. Its much better to give a car some long runs, or if you're unable to do that, change the oil more regularly.
A have a car mechanics magazine that ran an article on BP Ultimate. I can't remember who it was, but they set up an Audi engine to run 1000 miles on one bank of cylinders on normal fuel, and the other half on BP Ultimate. Well, if the pictures were accurate, the difference was amazing. The side on BP Ultimate was spotless, it looked like the inside of a new engine, and the other halves intake valves were covered in deposits, and this is only after 1000 miles. The report might be on the web somewhere.
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I don't think it will be that dirty. My car uses Ford's semi synthetic 5W-30 oil, so I don't think more regular changes would do a whole lot. I've done just over 6,100 miles since June 2008. Oil and filter were changed at 3108 miles last year at 1st service.
But yes, maybe its an idea to start using something like Redex Petrol Injector Cleaner?
Edited by Jcoventry on 03/01/2010 at 15:27
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Here it is,
www.youtube.com/watch?v=-PEBzuOkL9A
Couldn't find an English version!
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It is interesting but I can't help but think...well, it's a car with BP Ultimate written all over it - surely they're not going to make BP Ultimate look bad are they? :P
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True, we'll never know the exact truth, but my car runs better on it, thats for certain.
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Shell or BP @1p more than supermarket fuel - the 40-50p extra at a fill up is worth it. Car is smoother, less smoke from the diesel...
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HJ used to recommend Shell, I think on account of superior detergent properties.
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It's true to say that some supermarket fuels were poor, compared to the big oil companies. The fuels were often raw petrol with few if any additives, for engine cleanliness etc.
This lead to problems for some vehicles, that were fueled regularly at these outlets. After representation from the OEM's, which would have included handbook entries to specifically not recommend their fuels, the supermarkets jointly agreed to specify better additive packages from the suppliers. So, for at least the last decade, supermarket fuel has been as good, or nearly so as your Shell, Esso, Texaco etc.
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Some engines seem more sensitive than others, I can't speak for petrol, but I've always found that I get better mpg out of Shell than Tescos for instance... As they tend to be the same price (except when you have a 5p/l off Tesco voucher) I tend to buy Shell in the main... On the odd time I've had to buy the high priced Shell stuff I haven't noticed any difference.
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(should have read Shell and Tesco 'diesel' by the way, HJ site hanging on me again prevented me getting back in to edit, sorry!)
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The question is made on the assumption that it is cheaper to fill up at the supermarkets, hence the question is it worht the saving if the product is inferior. I have 2 observations
1, I use petrolprices.com to check pricing in my area, and almost universally, nearly every week, the cheapest is a large Shelll garage close to my home, the garage is in Chiswell Green, just off M25 j21A, 103.9 for unleaded at last fill up a few days back. Morrisons and Sainsburys both near me, are ALWAYS more expensive so why even ask the question if you believe (which I do not) that their product is inferior. I realise that in each locality this may not be the case.
2. As mentioned, I beleive the product is same. the supermarkets do not themselves drill for oil, and importantly do not themselves refine oil in to petrol and other products. Effectively they buy the finished product on the open market and distribute it, for all I know they may even buy from other distributors. Considering the massive engineering investment made by the oil companies in refineries, I don't think it is practical to consider that they refine an inferior product for the supermarkets than they do for the oil companies own branded forecourts.
this is my belief when comparing standard unleaded product. "super unleaded" may be a different kettle of fish, since this is where the oil companies are claiming a superior performance and charging for it too.
Guy
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As the OP has found all of the old threads with a search, we may as well lock this thread then.
Rob
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