Quote Originally Posted by FWCL
When I picked up my Euro, the dealer said the same thing. Apparently, premium is only recommended by Honda. He also said that putting in regular will not void the warranty.

Personally, I will use 98RON because it burns cleaner, there is more power and the better fuel efficiency will negate some of the additional cost.
I don't get it... The fuel flap states minimum 95 octane unleaded only. I think the dealers think Premium = 98 octane and 95 = regular. But to us consumers, regular = 91, premium = 95, Optimax/Ultimate/Vortex98 = 98. Also, it's cheaper to run 98 premium as the Euro's VTC can change the timing to improve fuel consumption with higher octane fuel (also up to a limit).

It makes no sense why people want to save $0.10 ($6.50 full tank, $5.50 by the time the light comes on) by using 91 octane when they can use 98 octane, get better fuel consumption and at the end of 1 tank, run the extra distance that it actually comes out slightly cheaper than 91 octane.