98 RON
 

I just read that the Aussie version requires 98 (RON) octane and the US requires 91 (AKI).

Since the Wikipedia gods say that 95RON = 90-91AKI, we should be able to use that...

What are your thoughts?

"Fuel requirement: Premium unleaded gasoline (91 octane). Recommended: 93 octane." from www.subaru.com

You really want to give up power and torque for the sake of a few cents per litre?

No. I'm thinking of running E85. But that's a different discussion.

I think we 'can' run 95RON.

E85 is a far more interesting discussion. I've been running my Liberty on ethanol for about 18 months and will be developing an E85 tune for these cars as soon as I am able.

You "can" use standard unleaded in your 86, but it won't make sense to run it on anything but 98.

if only there was such thing as E86 instead of E85. Get it, get it? ;) no? :bonk::slap:

From the Aus Toyota 86 Spec page:

Fuel
- Fuel type Premium unleaded
- Fuel type octane no 98
- Minimum fuel octane number 95

How much would one lose with 95RON vs 98RON.

Anything to gain by going to 99RON?

That is what I read too.

higher octane does not equal more power.

i would be using 98 in summer for sure. 95 in winter might be ok.

The fuel flap said use 98 RON ONLY - I'd stick with that. The available fuels give extremely close fuel consumption in terms of $/km of fuel used (my drive cycle isn't out of the ordinary), so any risk is for no gain.

Unless you have done some funny business with the intake/MAF or retuned the stock ecu the risk you are talking about is 0.0000000000000000000000%

And covered by a warranty.

I wouldn't count on warranty covering anything if you directly disobeyed fuel reccomendations.

By your logic I could fill up with diesel and get a new fuel system/engine for free.

Wrong...

Edit.. trying to be nice. It's min 95 RON. As per OP's update to his own thread. As per Toyota doco.

No need to scaremonger people (BP's marketing really works).