which petrol, a8 4.2

[billy5]

hiya all.
been using the green pump all the time.
i put shell v power in the other day and it felt more
responsive,
is this right or is it me being taken in.
any one else seen this,,
ta billy

[ecain63]

Have a look in the owners manual mate. All the details will be in there. It'll probably be normal 95Ron as its not an S or RS model but having the extra 3 or 4 octanes in the tank never hurt anything other than the wallet. Many cars cannot utilise the extra octane fuel and just run as normal, it depends on the cars set up. ie. does the ecu adapt to the fuel etc? Maybe yours does but i know most modern 'non-sport' cars dont.

[AKA8]

Hi Billy,

I used 95 for a while before switching to V Power permanently. Now, I might be wrong (I'm sure there are people who know better) but, I believe I have noticed an improvement in responsiveness, engine note, and also fuel consumption seems about 10% better on a long run - there's no difference in urban mpg.

Not sure if this could be backed up by fact because the ECU is programmed to deal with 95, but I think there's a difference.

Best wishes

Andy

[Dr G]

The V8s all seem to respond well to proper juice.

[billy5]

hiya,
i really believe that as aka8 said, like 4 to5 miles
extra on a run,
wen i got it from the midlands i put v power in it
and got 29mpg doing speeds round 70 to 90,
it was in the summer though, winter is a different
issue i think.
with the green 95, on run to liverpool on the a55 motorway,
22mpg same sor of speeds,
is the bp ultimate ?? similar to the v power,
nearst shell is 40mls from me,
it does say its a sports

allthe best,billy

Edited by billy5 on Thursday 4th February 23:56

[AKA8]

That's what I noticed, or at least believe I notice. I think it works better than 95, so I've continued to run mine on V Power (exclusively) for the last 3 years. I can get upper 20's when cruising on a motorway, which I think is great for that type of car with a petrol V8.

[billy5]

we are right aka8,
it sounds like a different car,
my missus said to me its changed ,the sound of the engine,
wen you accelerate,
she has dead good hearing, not like my marshall battered ears,
she didnt know anythink about the fuel change,
there you go,,
best wishes billy