Super Unleaded - Mk1 Toyota

[Radiodanno]

So, at the moment I'm running my car on 98/99 RON fuel. I hate being taken for a fool, and really don't want to get taken in on the placebo effect!

I drive a MK1 Avensis - 2.0CDX (3SFE egine) with 158000 on the clock.

My straight question is this. Using 99RON Tesco petrol, am I going to benefit from

*Increased MPG (most important)

*Increased response (less important)

*Reduced emmisions

?????????????

The tesco superunleaded RON 99 comes from Greenenergy (http://www.petrolprices.com/greenergy.html) and I have no complaints with it. If I'm going to benefit from 2 of the above 3, I'll stick with it.

I'm pretty certain the car is acknowledging it (engine idled a lot quicker the first time it went in - ECU responding?)

The car's done me well for a lot of miles now, I thought it'd be nice to return the favour!

Your thoughts please. On MY car, will it make reasonable difference? I'm reluctant to step up to Vpower Shell stuff because it's £1.05 where I am.

Thanks in anticipation.

[shroud]

I have a 1.8 vvti so not the same model, but i would imagine a similar outcome. Respionsiveness is better in that the cars pulls like a tortoise that has a bit more energy than one that is ready for its winter nap. mpg, i have never noticed a difference using Tesco 99 ron or VPower. I know the theory being that if the car pulls slightly better then you use less throttle, but i do not get the extra mpg on the computer. I used to buy 99ron Tesco all the time, but now buy Shell unleaded as it is cheaper. The difference in response is so small that i wouldn't buy the dearer petrol just for that purpose, given it is 10%+ dearer.

Hope that helps

[Black Knight]

Won't make any difference to the idle speed. Higher ron delays the onset of knock meaning the engine can advance the idnition timing further making for greater power/improved fuel economy. At idle there's no demand from the ECU to advance the timing and hence no knocking. It only benefits high performance/highly modded cars that are designed to benefit from it. Think Corolla Compressor, Subaru Impreza XYZ ABC's, Evo XXV's etc.

If I were you I'd save my money and stick to regular unleaded

[b1nda]

ive got a lexus is300 and im using the v-power and i have to say that it does give me more mpg and makes the car slightly more responsive....been using it for around 2 weeks now but the first 2/3 fills, i did not notice much difference but now ive been using it, over time i can tell the difference....