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[Pitchfork]

Neil.... I notice a substantial difference when towing long distances at steady speeds .. ie motorway stuff .. on "cheap" unleaded (sainsburys's ?) I'll get around 16-18 mpg .. on Shell V  its 20-24 mpg. Once off motorway where you are always changing the power the difference is negligible but the car seems to perform better.

HTH

Does the same apply for Diesel from the likes of Sainsbury's??
IW

yes.  see how much less diesel smoke (ultimately unburnt diesel) you get after a couple of tanks of bp diesel...

I thought that some time ago someone stated on here that Sainbury's fuel is suplied by BP
If that is the case, are they producing different grades for their own forecourts?
IW

[hotel21]

Neil.... I notice a substantial difference when towing long distances at steady speeds .. ie motorway stuff .. on "cheap" unleaded (sainsburys's ?) I'll get around 16-18 mpg .. on Shell V  its 20-24 mpg. Once off motorway where you are always changing the power the difference is negligible but the car seems to perform better.

HTH

Does the same apply for Diesel from the likes of Sainsbury's??
IW

yes.  see how much less diesel smoke (ultimately unburnt diesel) you get after a couple of tanks of bp diesel...

I thought that some time ago someone stated on here that Sainbury's fuel is suplied by BP
If that is the case, are they producing different grades for their own forecourts?
IW

As I understand things all fuel comes from the same refining process and places be it for Tesco or Shell.  Difference is that a preset additive is put into the fuel load as the tanker is filled before it does the deed at the garage forecourt.

Tesco is 'plain vanilla' whilst the Shell/BP gets the added mint chocolate chips, so to speak....    

[martin12760460]

So would my 2.5 run better on super unleaded ? i just put in esso 95 mostly used around town only showin 18mpg   i dont mind it costing extra if returns a little more.

[theowletman]

In most other countries v power is 100ron compaired to ours which is now 99. I could tell a difference in performance in my old mv6 on optimax as it was at the time and that was 98 ron I think. I have had my cosworth tested on a rolling road with tescos 95 and v power HUGE difference :
95 ron - 374bhp
v power - 406bhp
Don't know if it makes a difference on economy it drinks it too fast to tell however my wifes merc 220 diesel does an extra 50 - 60 miles per tank on v power diesel and seems more responsive trouble is its now £1.11 a litre so chip fat from now on I think.

I am absolutely convinced that supermarket fuel in the UK is inferior to main brands like Shell and Esso and BP. I did 63000 miles in 8 months as a courier and kept a very keen eye on fuel costs and mpg, Esso did it best for me, Safeway supermarket the worst.

[martin12760460]

98 or 95 ron ?

[Dave-C]

I've heard you can use veg oil, but I'd read this first before you try  

http://www.cavweb-forums.co.uk/showthread.php?t=132112&highlight=vegetable

Ooooooooooooops!

[Pitchfork]

I've heard you can use veg oil, but I'd read this first before you try  

http://www.cavweb-forums.co.uk/showthread.php?t=132112&highlight=vegetable

Ooooooooooooops!

Or should that be 'before you Fry'?

[JamesV6CDX]

What sort of a daftie can't tell the difference between petrol and diesel engines.

Should not be driving!

[Markjay]

I find that my car works best on Texaco High Octane for some reason, although BT Ultimate and V-Power seem to be OK as well.

If you can also mix half-and-half, will save you some money and the performance difference will be less noticeable.

But the main reason I use the high-octane fuels is because they have additives which keep the fuel system clean. That, and the Redex I use with every tankful...