Petrol - Which One?

Originally Posted by northwind

But the SV's a more or less fixed system, and it's set up to run on rubbish.

Yup, that's pretty much my understanding too. Must admit as a result I haven't bothered trying any higher octane fuel in my bike as yet.

yup completely fixed. performance increases could be expected if the engine was tuned to run on this fuel. Modern cars however adapt (and a few new bmw bikes) to the fuel its using, but not for power, for fuel efficiency. However the benefits in engine wear are also debatable. Optimax has some wild claims on their website. bikes always seem a step behind cars in terms of engine efficiency a vw lupo can do 60mpg!!

[northwind]

Originally Posted by gettin2dizzy

yup completely fixed. performance increases could be expected if the engine was tuned to run on this fuel. Modern cars however adapt (and a few new bmw bikes) to the fuel its using, but not for power, for fuel efficiency. However the benefits in engine wear are also debatable. Optimax has some wild claims on their website. bikes always seem a step behind cars in terms of engine efficiency a vw lupo can do 60mpg!!

A VW Lupo isn't getting 160bhp from an engine you can pick up and carry

The big daft BMW supernaked loses about 20bhp when run on regular, incidentally, but returns similiar economy.

I get 50-55 mpg out of the SV, whats wrong with that?

for something that weighs 180kg?! its ****!i seem to get around 40 mpg

Well I am just doing this test in my 206 sport. I will let you know if I notice much of a fuel economy difference but I have already noticed better pull at lower revs. So we shall see.

I've been told a few times it's a good idea to put something like a tank of Optimax in it say every 5 tanks to help keep the insides clean. Engines that are run on Optimax are definently cleaner on the inside

Originally Posted by DanF

I've been told a few times it's a good idea to put something like a tank of Optimax in it say every 5 tanks to help keep the insides clean. Engines that are run on Optimax are definently cleaner on the inside

i think shell recommend that....

i run optimax alot, its not a huge amount more expensive on a machine thats hardly a guzzler so as doubtful as i am on the benefits....why not?!

Good luck running Optimax - Shell were threatened with court action over the name - it's now called V-Power.

[mattSV]

I always use Optimax in my Scooby, and either Optimax or Sainsburys/Tescos on the bike