What do you put in your bike? E5 or E10

[peepae]

I've decided to put E5 in my tank which is 7p more expensive per litre at a supermarket 3 miles away, (12p more expensive at the closest petrol station)

 

what are you using?

[Interference Fit]

E10 in the CBR - Sticker on the tank says this is okay. 

[Guest]

What is the difference between E5 and E10?  Why is it more expensive than the other?

 

JJ

[iangaryprice]

Suzuki GSX600F 2003, it has carbs and basic ingition system, so cant benefit form better octane rating of E5. So I put E10 in it.

If its going to be laid up for some time I put E5 in, its supposed to be more stable/longer lasting.

[Mississippi Bullfrog]

Bikes' engine management systems can't adapt to E5 so you won't get any better performance.  In fact it can be slightly worse. A petrochemical engineer explained to me that to enable E5 to boost performance and fuel economy in higher performance car engines it has a flame retardant so the ignition timing can be advanced.

 

On bikes without adaptive ignition timing this can cause the engine to slightly lose power. It explained why I always felt my Bobber runs better on E10. 

 

Some say it lasts better over the winter if you don't ride as much but I've found E10 lasts fine. 

 

So I'm sticking with E10.

[peepae]

4 minutes ago, janinej said:

What is the difference between E5 and E10?  Why is it more expensive than the other?

 

JJ

It has more octane / petrol and less ethanol which is why it's more expensive. I don't know the exact differences and how it all works of course.

 

2 minutes ago, Mississippi Bullfrog said:

Bikes' engine management systems can't adapt to E5 so you won't get any better performance.  In fact it can be slightly worse. A petrochemical engineer explained to me that to enable E5 to boost performance and fuel economy in higher performance car engines it has a flame retardant so the ignition timing can be advanced.

 

On bikes without adaptive ignition timing this can cause the engine to slightly lose power. It explained why I always felt my Bobber runs better on E10. 

 

Some say it lasts better over the winter if you don't ride as much but I've found E10 lasts fine. 

 

So I'm sticking with E10.

Ah damn, I didn't realise that. I got swept up in the hype and my motorcycle instructors all said put premium in your own bike!!

[Pie man]

I never paid much attention, I put in E10 as its cheaper  

 

[S-Westerly]

Mostly E10. Now and again I'll give it E5 and if I'm laying it up before I go back to sea I'll fill it with E5. TBH I'm not that bothered either way. 

[Nick the wanderer]

E5 petrol is made up of 95 per cent unleaded petrol plus 5 per cent ethanol (which is why it's named 'E5'). E10 petrol is much more beneficial to the environment, containing 10% ethanol and 90% regular unleaded petrol – and was introduced to help the government meet its climate change targets.

 

 The Gov.uk website gives you a good idea, look up E10 Fuel Compatibility and it will tell you. 

 

 

https://www.gov.uk/guidance/e10-petrol-explained#compatibility

 

[husoi]

I use E10 during riding season.

E5 for storing it away in winter.

[Yorky]

25 minutes ago, husoi said:

I use E10 during riding season.

E5 for storing it away in winter.

+1

 

[RideWithStyles]

E5, as its an Old bike with carbs.

as nick said but additional:

again that is dependent on when and what your bike was designed to and made to do. what hardware (carb, injected) and/or software (various ecu and sensors capabilities) if applicable you have which will determine if and what it makes out of it...so if your ecu and sensors are modern enough they can adjust accordingly to whats going on in your engine.

 

the E5 is simply a modern fuels version of a Super unleaded, more refined with extra additives made in smaller batches.

where as the E10 has less synthetic additives, Massive batches with more renewable sources with the green label.
they burn differently, so thats why some cars and bikes can react differently.

 
just to bring up a similar thing in the car world between a mitsubishi evo and sub imprezas they generally had to run on super unleaded (otherwise they ran very poorly and got choked up) but funny enough depending on which brand of car you went for largely dictating the brand of fuel the car ran better again on, off memory i think it was imps on shell and evos on bp. 

 

my bike seems really happy on the coop/esso fuel. Less so the tesco stuff.

Edited November 28, 2023 by RideWithStyles

[fullscreenaging]

E5 is the recently old 95 Ron. 5% Ethanol 
They then brought out E10 - 10% Ethanol. 

E10 cost the same as E5 used to do and they put E5 up. Then everything went up!

I use E10 in my car but am getting less mpg now. 

 

 

 

Edited November 28, 2023 by fullscreenaging

[RideWithStyles]

11 minutes ago, fullscreenaging said:

E5 is the recently old 95 Ron. 5% Ethanol 
They then brought out E10 - 10% Ethanol. 

E10 cost the same as E5 used to do and they put E5 up. Then everything went up!

I use E10 in my car but am getting less mpg now. 

 

 

 

The cost of additional sourcing and whole process.

 

Thats your hit, Mpg costs are to save emissions so every little helps.

[JRH]

I use E10 as the Suzuki is made to use it.

However on some older bikes and cars it is recommended to use E5. This is because the additional 5% ethanol in the E10 can damage some of the rubber, plastics etc that was used in older, classic vehicles. 
The ethanol is also hygroscopic, this is why it is suggested to fill up with E5 to layup the vehicle for long periods as the fuel will absorb less water.

[Fiddlesticks]

I always use E5. Not sure why, but in the unlikely event that it causes the planet to be less nithering this time of year, I'll count it a bonus.

[Steve_M]

E10 in the bike, E5 in the mowers. Mostly

[peepae]

13 minutes ago, Steve_M said:

E10 in the bike, E5 in the mowers. Mostly

The BMW doesn't get the same princess treatment as the mowers I see

[Steve_M]

10 minutes ago, peepae said:

The BMW doesn't get the same princess treatment as the mowers I see

The mowers don’t do the mileage the BMW does so I can afford to treat them to the posh stuff. 

[peepae]

8 minutes ago, Steve_M said:

The mowers don’t do the mileage the BMW does so I can afford to treat them to the posh stuff. 

How's the grass looking!!

[geofferz]

4 minutes ago, peepae said:

How's the grass looking!!

Probably marshy like mine? 

[Nick the wanderer]

Don't you have a tracer 700? You should be running that on E10.

[peepae]

1 minute ago, Nick the wanderer said:

Don't you have a tracer 700? You should be running that on E10.

It has sensors and adjusts according to what's in the tank or so I've been told. MPG has gone up on E5 vs E10

[Nick the wanderer]

Sorry should have said Yamaha recommend you use E10. You can use E5 and should get 5 to 10% more mpg and a marginal power gain.

[peepae]

13 minutes ago, Nick the wanderer said:

Sorry should have said Yamaha recommend you use E10. You can use E5 and should get 5 to 10% more mpg and a marginal power gain.

Yeah I don't know anymore.. anyway the Tesco 99 momentum near me is only 4p more than the Sainsburys E10 and as such I've just been going to the Tesco.

 

Seems to be running better but honestly placebo effect is very possible too.