petrol

roey · Post by **roey** » Fri Jan 12, 2007 10:44 pm

i put vpower in my car but i was speaking to a friend they said tesco 99octane was better also been told tescos put lots of detergants in theres thats why its so cheap has anyone done any test on all the diffrent types what are about now

duncan · Post by **duncan** » Fri Jan 12, 2007 10:49 pm

v power is the best stuff - without doubt and I am sure no-ine would dispute that.

Mine was mapped on Tesco 99 the first time btu V power second time, not a vast amount of difference in the fuels or the amount of advance that could be run but with v power it will accept further octane booster to boost the octane. The tesco 99 has already been boosted so wont take much more.

This, I believe, is because v power is made from a better base fuel.

andycaca · Post by **andycaca** » Fri Jan 12, 2007 11:00 pm

i agree with everything dunc said

tesco petrol is biofuel, distilled from grain (or something).

speaking personally, my car misfires like hell when run on anything other than v-power. i couldnt accellerate through the midrange, even at 1bar, on the tesco 99ron fuel

duncan · Post by **duncan** » Fri Jan 12, 2007 11:02 pm

mine runs ok on it because my base mapping was done for it - it runs better on v power though.

BP ultimate makes it throw a wobbly though and anything else is just get me home stuff off boost

roey · Post by **roey** » Fri Jan 12, 2007 11:08 pm

thought it was the best

RobCallow · Post by **RobCallow** » Fri Jan 12, 2007 11:08 pm

When I first got my Impreza I ran it on BP Ultimate and it didn't seem to run quite right even after an ECU reset, then I swithed to V-Power and it ran really smoothly so not looked back.

Not tried Tesco Value-Power and don't think that I will.

Post by **Ben** » Sat Jan 13, 2007 9:02 am

Mine ran on Tesco's but is better on V-power. I did find optimax a bit hit and miss though. As my car is decatted I add two bottle of octane booster to each tank (if you have a cat you can only add one).

Matter of interest - does V-power go off as much as optimax did

Post by **Stuart** » Sat Jan 13, 2007 10:55 am

I run my car on Vpower with out booster with no problems at all. The only time octane booster gets chucked in as a precautionary measure against detonation. This is on specific occasions like quarter miles or trackdays, and probably only a placebo in as much as it probably only makes me feel better about caning the car.
Personally I wouldn't use anything else if there was a choice.

duncan · Post by **duncan** » Sat Jan 13, 2007 11:21 am

V Power should be good enough for most occasions. As Stu say octane booster helps out on special occasions.

There was a test done between the various petrols last year but not with the new V Power. This would definitely put it clearly top of the tree now i suspect.

I just wish I didnt have to drive for 30 minutes to get to the nearest shell station

sdminus · Post by **sdminus** » Sun Jan 14, 2007 11:43 am

How come you guys all run octane booster on the road. seems a bit of a waste of time ( keeping in mind that you will be most prone to knock in gears 3rd and above approaching peak tq )

I was just wondering how often you guy top out 3rd and 4th gears on the road :?:

I read a interesting artical on octane boosters and all there test subjects were found to do sweet FA.

Scott