Hi everyone

if this topic has been discussed I apologize.

Has anyone run non-ethanol has in your Jag? I can locate 87 ethanol free gas, what if I mixed with 91E10?

I hate storing ethanol for any amount of time...

 

Here in Oz the majority of 95 RON fuel/petrol/gas (the minimum requirement of the F-Type V6 and V8 engines) and 98 RON are 100% ethanol free, ie pure gas.
I use the 98 RON some of the time and the 95 some of the time and there are zero problems with either.
I also use 100 RON most of the time, which is 98 RON laced with 5% ethanol, and also no problems
You can also get a range of 5% and 10% ethanol laced gas here in Oz, most commonly 94 RON which is basic 91 RON gas laced with 10% ethanol. I never have and never will use that stuff in my F-Type, the RON is too low and and the ethanol content is too high for my liking.
The manual specifies that the V6 and V8 should not use gas with more than 10% ethanol content.
91 RON = 87 AKI and 95 RON = 91 AKI, so using the AKI terminology 91 AKI "pure gas" is perfectly OK to run in your F-Type, but I would be wary of using AKI 91E10 as it's right on the borderline for both octane rating and ethanol content.
If you diluted 91E10 with 87 pure gas you would end up with an octane rating lower than that specified by JLR so I would not do it.

 

I have run non-ethanol in my f type since it was purchased new. 91 octane though. Sometimes I have to use 90, but never below that. Not sure what the comparison is to OzXFR's numbers, but this is rating on the gas pump (New York, USA)

 

For "pure" gasoline, there is usually an 8 point difference between RON and MON. The AKI in the U.S. is the average of the two. E10 will usually have a 10 point difference between RON (research octane) and MON (motor octane). So a 93 Octane E10 will have a 98 RON and an 88 MON. Over simplified explanation: RON is more critical under high rpm conditions, MON more critical under low speed, high load conditions. For track use, you want the two numbers as close as possible, since the engine will be exposed to all of these conditions.

 

Don't worry about the ethanol content. Octane rating is far more important. Jag recommends min 95 Ron which is the same as 93AKI.

 

Actually, 95 RON is closer to 91AKI, which is what Jag specifies for the F-Type here in the U.S.

 

91 is the highest I can find in California-Nevada. I may be able to get something higher in Nevada, I am searching and looking for low ethanol.

I store a boat and I know the ill effects of ethanol and don’t particularly feel like dealing with the same with my car.

 

You should worry about ethanol content if it's higher than 10%, that's above Jaguar recommendations.

 

Boats have open fuel systems which can allow the ingress of water.
Cars have sealed fuel systems that prevent ingress.

 

Particularly so with modern cars....over the last couple decades or so. Heck, if you're gas cap is two clicks shy from being fully seated the self-test system will trigger a warning light.

Cheers
DD

 

Hello; I was hoping for some guidance for fuel for my 17 Jag F Type, please.

Here on Kauai the highest octane (for all gas stations) we have is 92 and that comes with E10 (which I prefer not to use). One station offers gas with an octane rating of 89 and with no ethanol.

For performance, do the responding members suggest for my car to use the 92 octane rating with E10 or use the 89 and add an octane booster, to get to the manufactures recommendations for their minimum octane requirement?

Thanks

 

here is the website I use to find non ethanol

https://www.pure-gas.org/

 

Thanks. Does the pure gas octane rating in your area meet the manufacturer's recommendations?

 

Useful info. Unfortunately, nothing with sufficient octane for Steve in Hawaii. I would opt for the E10 with adequate octane.

 

Mahalo Unhingd for your thoughts, we will forego the additive octane booster and use 92 w/E10.

 

I regularly used Chevron 95 non-octane in my Jag but in this case, I'd run the E10 with the appropriate octane before running lower octane "non corn contaminated" fuel as Unhingd suggested. shouldn't be an issue unless the car was going to sit for some time.

Dave

 

Thanks for your thoughts, Dave.

It is at times a real bummer living on a small rock in the middle of the Pacific Ocean.