E10 Petrol: Anyone concerned?

Delvis

Delvis

Delvis

Caporegime
Joined
7 Nov 2004
Posts
30,204
Location
Buckinghamshire
Hello,

Recently got told about this and it's literally the first time I've seen it mentioned :p

Seeing as I own an 08 reg car, figured I'd look into it.

Apparently come September 2021, e5 fuel is being 'replaced' with E10 (yes, I know some e5 will be around for a while longer):

The RAC Foundation estimates that more than 634,000 cars on UK roads aren't compatible with E10, and 150,000 of these cars were built from the year 2000 onwards.
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https://www.whatcar.com/advice/owning/e10-petrol-what-is-it-and-how-could-it-affect-you/n18069

Thoughts? Don't care? :p
 
My car has an E10 sticker in the fuel filler flap, so I'm unconcerned.

Those running old bangers should be a bit worried as it'll eat the seals and fuel lines, unless they decided to splash out for E5 super unleaded.
 
First time I've heard about it. Got me a little worried as my brother has an 08 focus, checked the gov website, and apart from one exception, all Ford cars sold since 1992 are fine for E10. Got me worried for nothing! :rolleyes::D
 
When I drove around Europe in 2019 I accidentally filled my Clio up with E10, it hated it, felt sluggish and felt like it was going to break down.
 
Greg0986 said:
When I drove around Europe in 2019 I accidentally filled my Clio up with E10, it hated it, felt sluggish and felt like it was going to break down.
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Same with diesel - my truck runs a touch rougher, less responsive, lower MPG and more inclined towards belching a cloud of smoke out the back if I put my foot down with B7 almost certainly undoing any environmental gains and by all accounts from people in other countries, with vehicles with the same engine, if you go much above B10 it quickly causes expensive bills :( further eroding any environmental gains due to having to replace stuff or even the whole engine/scrapping the vehicle.
 
Rroff said:
Usually happens if I push it before the engine is properly warmed up - with old regular diesel doesn't tend to happen but B7 it seems to.
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Two important points.

Firstly, you can't get non B7 diesel. All diesel is labelled B7 (In the UK at least, I don't think anyone sells the higher blended bio diesel). The change was simply in the labelling - it is the same fuel you've been using for 10+ years, it's just legally it is now labelled B7. So you're not filling up with 'regular diesel' and you're not noticing any difference with 'B7 diesel' because it's the same. B7 is diesel with UP TO 7% biodiesel, note the word 'up to'. If it has no bio diesel, it's still B7.

If you won't take my word for it, take BP instead:

BP said:
What is B7 diesel?
It’s the same diesel fuel that you’re currently using. Diesel fuel in the UK already contains up to 7% biodiesel and has done for more than 10 years. Both BP regular diesel and BP Ultimate Diesel are now also labelled as B7
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The difference between picking up the Diesel (B7) Pump at your local filling station today versus doing exactly the same thing 5 years ago is that it has a sticker on the nozzle saying B7. That's it.

Secondly, unless your truck is exceptionally old it will have a diesel particulate filter, as basically every diesel post 2008 has, and therefore should not be emitting smoke unless there is some sort of problem with the vehicle.
 
[TW]Fox said:
Two important points.

Firstly, you can't get non B7 diesel. All diesel is labelled B7 (In the UK at least, I don't think anyone sells the higher blended bio diesel). The change was simply in the labelling - it is the same fuel you've been using for 10+ years, it's just legally it is now labelled B7. So you're not filling up with 'regular diesel' and you're not noticing any difference with 'B7 diesel' because it's the same. B7 is diesel with UP TO 7% biodiesel, note the word 'up to'. If it has no bio diesel, it's still B7.

If you won't take my word for it, take BP instead:



The difference between picking up the Diesel (B7) Pump at your local filling station today versus doing exactly the same thing 5 years ago is that it has a sticker on the nozzle saying B7. That's it.

Secondly, unless your truck is exceptionally old it will have a diesel particulate filter, as basically every diesel post 2008 has, and therefore should not be emitting smoke unless there is some sort of problem with the vehicle.
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I've already explained this point before - I think even in reply to you but I might be mistaken on that.

EDIT: No was in response to Kenai who posted basically the same thing.

EDIT2: Though the difference might have been Cetane rating rather than biofuel content I have no way to be sure.

[TW]Fox said:
Secondly, unless your truck is exceptionally old it will have a diesel particulate filter, as basically every diesel post 2008 has, and therefore should not be emitting smoke unless there is some sort of problem with the vehicle.
Click to expand...

It has seen better days isn't that old but previous owner did ~23K miles of stop-start journeys with average speed ~15 MPH vs 32 for me - so wouldn't be surprising if something isn't 100% injector wise, etc., has a DPF and passes the MOT fine but if temperatures are below ~10C and I go foot to the floor for whatever reason before the engine has warmed up the first time there is a chance of a momentary cloud of white smoke.
 
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Well according to the gov site my 09 Mazda MX-5 will be fine. It's mapped to the good stuff and I'm unsure if the new bioethanol content will affect the map, but can always get it put on the Dyno and retweaked if needed.
 
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