Premium fuel or Regular fuel (what do you use)

[midlife]

They come from the same refineries, all that differs it the additive package that is normally added when the tanker gets to the forecourt.

We've used Tesco Diesel for past 15 years with no issues at all.

Maybe for high perfomance "knock limited" turbocharged petrol you'd go for the highest RON fuel (again Tesco did Momentum 99?).

I used to buy 97 and mix 20% Methanol in when drag racing cheap and 106 Blended Octane Rating..

I had a tank of 50/50 methanol and water in the boot and an aquamist injection system to chuck it into the intake

 

[PeteXXX]

How many Ron is 'normal' supermarket petrol as opposed to 'normal' BP, Shell etc

 

[screenman]

According to a friend in the motor trade....

Supermarket fuel is bought on the Amsterdam spot -market Vs Branded fuel made with a proprietary recipe of additives.
Both meet the legal minimum standards but the Branded fuels supposedly over time help the engine run better and give better fuel economy

What trade is he in? Maybe building. The lorries at the depots here fill up at the same tanks.

 

[midlife]

AFAIK they are both 95 Ron.

 

[keithmac]

I had a tank of 50/50 methanol and water in the boot and an aquamist injection system to chuck it into the intake

I had Aquamist as well, direct port on the runners (Mitsubishi GTO TT).

I redid the fuel system, braided Teflon Lines, Twin Walbro fuel pumps, twin feed fuel rails, Bosch 1000cc ev14 injecotes etc and went over to Methanol mixes for more accurate fuel delivery (was running 1l per minute 50/50 in the Aquamist kit and it was hard to map it correctly).

 

[midlife]

I had Aquamist as well, direct port on the runners (Mitsubishi GTO TT).

I redid the fuel system, braided Teflon Lines, Twin Walbro fuel pumps, twin feed fuel rails, Bosch 1000cc ev14 injecotes etc and went over to Methanol mixes for more accurate fuel delivery (was running 1l per minute 50/50 in the Aquamist kit and it was hard to map it correctly).

had mine mapped at Roger Clark Motorsport . Had to ask the Bank Manager to pay lol.

 

[Drago]

Did read somewhere that with some supermarkets, that fuel can run low and sediment in the tank can be disturbed. Some cars have needed engine re builds or have been written off.

That's the biggie. The standard of fuel handling and storage makes the greatest difference.

 

[screenman]

There are a lot of filters in place before it gets into the engine, also think about where the pick up pipe is in the storage tank.

 

[keithmac]

had mine mapped at Roger Clark Motorsport . Had to ask the Bank Manager to pay lol.

Yep they have a great reputation!.

I road mapped my efi converted Mk2 Golf GTI 16v G60 from scratch (Megasquirt).

Also road mapped my GTO but it was a bit "interesting" running 2bar boost, bit daft really looking back..

 

[sleuthey]

Always regular derv.
Archived this on a run from Portsmouth to Bristol in the autum:

 

[keithmac]

Always regular derv.
Archived this on a run from Portsmouth to Bristol in the autum: View attachment 506509

I saw 3 mpg on our Kuga's Instant Trim when towing once (caravan up a steep hill)..

80mpg is very good, what car?.

 

[sheddy]

We’re in the sticks so Calor gas

 

[Ming the Merciless]

I hear good reports about Red Diesel

 

[sleuthey]

I saw 3 mpg on our Kuga's Instant Trim when towing once (caravan up a steep hill)..

80mpg is very good, what car?.

Seat Leon MK3 estate

 

[Cycleops]

I had Aquamist as well, direct port on the runners (Mitsubishi GTO TT).

I redid the fuel system, braided Teflon Lines, Twin Walbro fuel pumps, twin feed fuel rails, Bosch 1000cc ev14 injecotes etc and went over to Methanol mixes for more accurate fuel delivery (was running 1l per minute 50/50 in the Aquamist kit and it was hard to map it correctly).

You've completely lost me.