E10 Petrol

Any advice from the more technically minded re the proposed E10 fuel, which is due to replace un-leaded petrol next year?

 

I own the 2.2 n/a version and personally I have only ever used super unleaded BP Ultimate throughout my ownership (8 years) but I wonder whether it will be compatible to use E10. 

 

I thought this subject  may have been covered but I can't seem to find it anywhere.

 

Cheers.

 

Bob

All the fuel lines are plastic, so wont be affected by ethanol the way rubber lines can be (even the ones that are rated for it..) and only the direct injection version of our engine (z22yh) is on the list below.

https://www.acea.be/...mpatibility.pdf

Thanks for that and the useful link.

Also I have read that super unleaded will be staying E5

Over here quite a few premium fuels have to be listed as E5 due to regulation, but are actually E0.
 

I accidentally put e10 in my car in france 2 years ago on a track.

Completely fooked my SC car. For NA it is probably fine.

Was that due to the lower octane Smiley??

I'd also read the Acea list and thought technically it was ok to use..

At higher rpm (5k) the car stuttered like crazy.

This was gone when i refilled with ron98 E5 (ie E0)
 

The issue with E fuels is that while they are more resistant to knock (many super/higher octane fuels are heavily E'd up as its cheap), they contain  less energy per volume, and the stoich AFR is much richer than straight gasoline, so you can run out of injectors at certain points in the rev range/have a lower rev limit etc.

 

I've picked up petrol in the past that has had that evil Ethanol smell to it, so they have been cutting the fuel with it for years on and off (I guess as market pricing fluctuates). Moving to E10 isnt the end of the world for most folks, but those in high tunes may need to pay attention when filling up or retuning.

How do engine seals fair with E10?  Are we into nitrile seals yet?

I would have thought lip seals would have to be nitrile, viton or something proprietary to deal with hot engine oil and would hope very little unburnt petrol/ethanol would be getting near the oiley spinney bits.

Anyone running a non OEM fuel system should at a bare minimum be using R9 rated hose and inspecting / replacing them periodically, or better still run PTFE and never worry about it again.

 that evil Ethanol smell

 

I would have thought lip seals would have to be nitrile, viton or something proprietary to deal with hot engine oil and would hope very little unburnt petrol/ethanol would be getting near the oiley spinney bits.

 

 

I've had issues in the past, admittedly with methanol, where all the engine seals started to break up due to methanol traces passing the rings and circulating with the oil and so on.  This may be extreme as it was on a door slammer running a few % methanol for flame speed.