In a thread a while back the question of octane ratios came up.
Situation :
Prior to last service just used normal 91 unleaded (BP) & Gull
Post last service noticed consumption went up (over exactly same
routes and driving style )
went up about 1 litre per 100k
So chucked in half a tank of 95 35 litres to 70 litre tank
consumption went not only back to normal but improved slightly ?
ran tank down to 10 litres remaining refuelled vehicle to full with
91 and up went the consumption again.
Thought hmmmmmmmm so refilled next time with 98 consumption only
got worse ???
back to 50/.50 blend of 95/91 it the vehicle is less thirsty and back
to 7.3 7.7 per 100 clicks
on 98 its 10.9!!!!!
Asked the dealer AVG Perth what could be going on
only clue he thinks is they change the computer for winter motoring ?
And to parameters for its mileage ?
He said might be an idea to hook up my in car computers (2 lap tops)
with a program he has that monitors performance from the cars
computer system But is a "bit unofficial"
Given I do up to a 1000 clicks a day this consumption thing
translates direct to my bottom line .
Any thoughts or comments ?
Cheers
