E10 Petrol

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NascarMike
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Post by NascarMike » Sun Aug 08, 2021 12:59 pm

With the impending introduction of E10 Petrol and the reported reduction in economy and power of this fuel, would the use of Miller's Petrol Power Ecomax be a wise move?

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CJJE
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Post by CJJE » Sun Aug 08, 2021 3:32 pm

I'm told E10 is no problem for cars built since 2016, ( and many cars built since 2011 are fine too). And I've certainly used it in Europe with my previous cars without any problems.

If you use E10 in a non-compatible car over a long period of time, it may well cause lasting damage to the engine. Bioethanol has corrosive properties and Department for Transport (DfT) research suggests it can damage hoses, seals and plastics in engines that aren’t compatible. It may also harm fuel pumps and carburettors. But that is over a long period. Just filling up once with E10 in a classic car should be fine although the engine may be slightly harder to start and run a bit rougher. Experts say the driver should add regular E5 petrol as soon as the tank has emptied. (see here: https://blog.greenflag.com/2020/e10/)

Another solution is to use the higher octane 'premium petrol' as that isn't 'watered down' with Bioethanol. (And adding Millers doesn't seem likely to remove the harmful Bioethanol from E10 petrol.)

But I don't see any problems using E10 in any petrol Karoq, as it's engine will have been designed for it.

Chris
MY21 Race Blue Karoq Sportline 2.0TSI with PS/DCC, Virtual Cockpit, Heated Windscreen, Spare Wheel & Area View. Ordered 2/6/20, built 21/10/20 and collected 16/11/20! :D

Pragmatix55
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Post by Pragmatix55 » Mon Aug 09, 2021 11:04 am

So much scaremongering about E10, you want notice a difference, I've used it in Europe and couldn't tell in fact it was only afterwards that I found out I had been filling with E10 and that was in a 2010 Mondeo the Karoq is designed for it
Must be mad not enough money to be eccentric

Routemaster1
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Location: Dorset

Post by Routemaster1 » Mon Aug 09, 2021 11:25 am

CJJE wrote:
Sun Aug 08, 2021 3:32 pm
Adding Millers doesn't seem likely to remove the harmful Bioethanol from E10 petrol.)

Chris
I don't understand why you call ethanol harmful, apart from the results of drinking too much.

If fuel has 10% ethanol in it, it calculates at nearly half a pint of ethanol in a gallon of fuel. No additive is ever going to remove it.

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CJJE
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Post by CJJE » Mon Aug 09, 2021 11:37 am

Quote from the Green Flag link I included above:

Will it harm your car?
------------------------------
If you use E10 in a non-compatible car over a long period of time, it may well cause lasting damage to the engine. Bioethanol has corrosive properties and Department for Transport (DfT) research suggests it can damage hoses, seals and plastics in engines that aren’t compatible. It may also harm fuel pumps and carburettors.

But that is over a long period. Just filling up once with E10 should be fine although the engine may be slightly harder to start and run a bit rougher. Experts say the driver should add regular E5 petrol as soon as the tank has emptied.

Chris
MY21 Race Blue Karoq Sportline 2.0TSI with PS/DCC, Virtual Cockpit, Heated Windscreen, Spare Wheel & Area View. Ordered 2/6/20, built 21/10/20 and collected 16/11/20! :D

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kodiaq
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Post by kodiaq » Mon Aug 09, 2021 5:51 pm

All Karoqs are new enough to be manufactured accounting for E10
Colin Lambert.
Poole, Dorset.
Diploma Auto Eng.
Moderator Karoq Forum.
(Kodiaq Forum Moderator, resigned!)

AMcK
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Post by AMcK » Fri Aug 13, 2021 3:36 pm

Vehicle manufacturers have been aware of the move to E10 for many years. In 2018 ACEA and JAMA produced an updated compatibility list (https://www.acea.auto/files/ACEA_E10_compatibility.pdf) for most cars used in Europe.

DeepAirDiver
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Post by DeepAirDiver » Sat Dec 11, 2021 7:22 pm

I've noticed a big difference in mpg between the two. Gone from 430miles a tank on E5 to 390 on E10.
Drives better on E5 too
will octane booster help on a tank of E10 or shall I just use super unleaded

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CJJE
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Post by CJJE » Sat Dec 11, 2021 8:29 pm

DeepAirDiver wrote:
Sat Dec 11, 2021 7:22 pm
I've noticed a big difference in mpg between the two. Gone from 430miles a tank on E5 to 390 on E10.
Drives better on E5 too
will octane booster help on a tank of E10 or shall I just use super unleaded

I'd suggest just sticking to E5 Premium/Super Unleaded if you feel it's cost-effective. I've been using E5 Premium in my car so far (3,000 miles in 12 months!) but had to fill up with E10 unleaded yesterday as the pumps I was next to in a crowded filling station only had diesel or E10. I didn't notice any difference on the 50 mile drive home, but will watch the fuel consumption with interest.

Chris
MY21 Race Blue Karoq Sportline 2.0TSI with PS/DCC, Virtual Cockpit, Heated Windscreen, Spare Wheel & Area View. Ordered 2/6/20, built 21/10/20 and collected 16/11/20! :D

Routemaster1
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Post by Routemaster1 » Sun Dec 12, 2021 10:17 am

CJJE wrote:
Sat Dec 11, 2021 8:29 pm
DeepAirDiver wrote:
Sat Dec 11, 2021 7:22 pm
I've noticed a big difference in mpg between the two. Gone from 430miles a tank on E5 to 390 on E10.
Drives better on E5 too
will octane booster help on a tank of E10 or shall I just use super unleaded

I'd suggest just sticking to E5 Premium/Super Unleaded if you feel it's cost-effective. I've been using E5 Premium in my car so far (3,000 miles in 12 months!) but had to fill up with E10 unleaded yesterday as the pumps I was next to in a crowded filling station only had diesel or E10. I didn't notice any difference on the 50 mile drive home, but will watch the fuel consumption with interest.

Chris
The issue here is that the change from E5 to E10 is only one factor. It has been very cold and all cars use more fuel in cold conditions. Also, the way we use cars differ between tankfuls. You will get far more miles per gallon if you are travelling at a constant speed on a motorway compared to town driving. My experience, judging from our C3 is that there is little differece between E5 and E10, but I have noticed an increase in our Karoq, but I have done most of my recent journeys in very cold weather. Time may tell when we get round to spring. Also I expect the car, which currently has covered just over 1000 miles to loosen up and consumption should improve. BTW my car is too new to have used E5.

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