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fuel additives

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Old Nov 12th, 2018, 13:38   #11
Tannaton
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Originally Posted by Mick787 View Post
Tannaton, I have no doubt about the number of refineries and what you have said. However, I cant ignore the comments made by journalists like HonestJohn who after years in the trade, appear to swear by the long term benefits to a motor vehicle of using fuel from a non supermarket source to using supermarket slop.
Do the fuel tankers have separate compartments? I can't help but wonder if section 'a' goes to Tesco or whatever and section 'b' to the non supermarket outlet. It wouldn't take much to add a little something extra when section b is filled at the depot. Supermarket slop may not be watered down, but non supermarket fuel may have a richer taste?
Perhaps someone will be able to say without the risk of loosing their job.
The bigger articulated tankers are compartmentalised, usually into 4 or more tanks and they are baffled as well. This enables them to deliver different fuels (diesel, petrol, premium etc.) and stops all the contents sloshing to the back on hills...

So yes your point is fair it is entirely possible for tankers to deliver different "mixes" to different customers.
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Old Nov 12th, 2018, 15:54   #12
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My D3 C70 has its MoT in the next couple of weeks, so I’ve been using Millers Ecomax for the last few fillups, in the hope of it doing a bit of cleaning. Might be a waste of money, but it might not....
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Old Nov 12th, 2018, 15:58   #13
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When i ran my Jeep, i got an extra 3mpg running on Shell diesel compared to Supermarket fuel, also the wife reckon the Jeep was quieter as well, cept when playing Pink Floyd 😆 on the way home, now it's Foo Fighters, Glastonbury 17.
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Old Nov 13th, 2018, 10:30   #14
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Quote:
Originally Posted by Tannaton View Post
The bigger articulated tankers are compartmentalised, usually into 4 or more tanks and they are baffled as well. This enables them to deliver different fuels (diesel, petrol, premium etc.) and stops all the contents sloshing to the back on hills...

So yes your point is fair it is entirely possible for tankers to deliver different "mixes" to different customers.
More to the point the compartments stop the whole body of fluid rushing to the front of the tank when emergency braking. The vehicle may well have stopped safely and then there is the load of fuel coming from the back of the tank pushing the truck several feet forward into the vehicle in front or the person walking across the road.
Similar reasons as to why cattle (or any animal eg sheep or other loose animals) trucks have the cattle penned into sections of the truck so they do not cause the truck to lurch forward after the truck has stopped safely.
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Old Nov 13th, 2018, 14:14   #15
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My son works for one of the big oil companies and dispatches fuel from the refinery.

He says they supply all the supermarkets as well as some branded petrol stations and its all exactly the same fuel. Shell and BP may well be different, but aside from them there's nothing much different between supermarket fuel and much of the other fuel you can buy in this country (except the price.)

That's partly because the supermarkets buy in huge quantities.

He always uses supermarket stuff...
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Old Nov 13th, 2018, 20:02   #16
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There is a minimum specification that road fuels need to attain, Ron, Cetane etc.
The fuels leave the refineries equal to each destination, be it their own franchised forecourts or whatever supermarkets they have the contracts with or whoever has bought on the spot market.
It comes from the same tanks.
However if you look at my first sentence you will note ' minimum spec' mentioned.
So you get good days and you get minimum spec days.
That's all down to the blend on the day, some days you may get lucky.
Been doing this for a while now
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Old Nov 13th, 2018, 20:43   #17
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I'd recommend Tunap injector cleaner. I used it on a full tank and I've seen a decent return (extra 3 mpg). I believe the mainstream fuel is fair better than the supermarket brand. I've seen far too many clogged injectors and egr valves from owners using this fuel.
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Old Nov 13th, 2018, 22:09   #18
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Im fairly confident that all the supermarkets are served by Greenergy who I *think* also serve Esso - they're a big supplier.

From what I've read, the core fuel is the same, it's the additives added that differ.

And as we pretty much know, the super fuels just have even more additives. (Cleaning power, cetane etc)
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Old Nov 14th, 2018, 07:51   #19
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Quote:
Originally Posted by GusGecko View Post
Im fairly confident that all the supermarkets are served by Greenergy who I *think* also serve Esso - they're a big supplier.

From what I've read, the core fuel is the same, it's the additives added that differ.

And as we pretty much know, the super fuels just have even more additives. (Cleaning power, cetane etc)
It seems to me that we assume, infer, claim, guess, hope, etc., but nobody here (or on every other car forum where these same debates rage) actually knows! It would be great to see a table showing the specific ingredients of the fuels sold.

And can every petrol car make use of an increased octane rating? Does every car need the alleged 'cleaning' additives?

Fuel is energy, but additives obviously displace fuel; so why aren't we worried about this?
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Old Nov 14th, 2018, 09:02   #20
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Quote:
Originally Posted by Zebster View Post

Fuel is energy, but additives obviously displace fuel; so why aren't we worried about this?
Could part of the reason for not worrying be that at the rate for instance Millers is added, 50ml to 50ltrs, ie 1:1000, it doesn’t displace much?
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