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E10 fuel

D

danorman_

New member
Hello everyone,

My friends and I are planning a road trip which is approximately 1500 miles, give or take 100 miles. That's going to be a fair chunk of fuel and I'm curious - would it be okay for me to use E10 fuel for the trip? I know the car isn't designed for E10, and I always fill up with E5, but wondering what the repercussion would be with using E10 instead. Could I use E10 with some kind of Octane booster in order to balance things out?

Cheers,
Dan
 
Is this down to fuel availability or cost ?

As you say and pp Porsche Cars Great Britain: Compatibility of E10 fuel with Porsche vintage cars and recent classics - Porsche Great Britain ... unfortunately Porsche do not specify `why`

Given that the standard car can run 95 Octane I would assume that the reason `why not E10` is down to the compatibility of some of the materials in the fuel system - probably the rubber / plastic components

I would `hazard a guess` and offer that running E10 `when you have to` and upon trip completion reverting back to E5 to flush the system would be OK

Unless modifications dictate running E5 98 Octane, using E10 with an Octane Booster would not be required

Further info ...


 
There is a lot of historic info on this forum about E10 fuel. Basically anything Boxster and younger is OK with E10, anything 968 and older is not without major (expensive) modifications in all the pipework between the fuel tank and the injectors, as the lining of the pipework is not compatible with E10 and will degrade, leading to expensive repairs. It's not octane related, as 95RON E5 works fine, I ran my 968 coupe on it for many years, the problem is the bio stuff they add at up to 10% rather than up to 5%.
 
Hey guys. This ultimately comes down to the risk of not having E5 on the journey. We're going rather rural so I'd imagine E10 might be the common and only option.

I was planning on replacing all the fuel lines and pipework from the tank to the fuel rail anyway. They look fine, but I wanted to go braided so that they're more durable for the future. Is there any additional parts that I should consider replacing during this process? Any seals people would recommend, etc? Always happy to take advice!
 
Replacing the fuel lines with originals is a very expensive exercise. The cost of the 2 solid pipes is eye-watering and then you have to drop the back axle to fit them . My Indy spent a long time sourcing flexibles to replace the pipes in my last Turbo. I think the cost, excluding the pipes between tank and pump was in the order of £700-800. His main difficulty was in sourcing suitable fittings. Then you might have to look at seals on injectors etc.
The other issue is the fuel consumption. You wont get as far on a gallon of E10 as you will on E5.... and its significant!
 
Dan
Great well informed advice here as usual. Most forecourts sell a "Super" alternative and even the supermarkets indicate that it is E5.
There are still cars around with manufacturers specifying minimum 97RON, so most forecourts sell it.
Esso Supreme is Zero alcohol...sign up for PCGB's Esso Card scheme and you get a discount on it!!
 
Don't know if your trip includes Northern Spain, but if it does be aware that on our trip (OK, 10 years ago in the 968 cab) we pulled up to a 99RON pump and saw an E10 label on the pump! Needless to say I did not refuel, wet down the road to a Repsol station where I was told (then, don't know that it's still true) that Repsol do not add ethanol to any of their fuels. Check the pump sticker before you start re-fuelling!!
 
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