Supermarket Diesel. Does it clog injectors ?

[clf]

Fuel will indeed come from a small number of refineries. What is different is the additives that manufacturers put into their fuel.

I can only say what I have found, on my car (my dad had similar findings). Using 'Go' fuel which is an unmanned fuel station, that sells fuel at supermarket prices (not sure if it is available on the mainland), and the car went fine, started fine, ran fine, and got for my commute around 420 - 430 miles for each tankful.

Started using Maxol (at their unmanned stations), and the car went fine, and started fine, but it felt a little more eager. It was different, nothing I could say was measurable, it just 'felt' different. When I first used it, it was purely to fill up, and not because it was a branded fuel. As it was convenient on my way home, I started to use it each time on my way home. (ironically it used to be the most expensive fuel on my route home, but now as cheap as the Go - plus it is beside an MG dealer). A fill will now get me 440 - 450 miles.

My dad said he noticed using the Maxol, he would get a few more miles out of a tank. But it like mine, was only about 10-15. He didnt notice any improvement on running though, but his is a petrol .

As I said, the different is just how it feels, it just seems more eager, just different, and I cannot even say it is faster or anything like that.

For super unleaded, or super duper diesel, I would suggest you would have to have the car mapped to suit. Or if an older car, the timing would need to be adjusted to take advantage of the extra rons and cetanes. All this 'cleaner burn' advantages may well be true, but I cannot see how it will make the piston throwdown faster within the same stroke whilst the fuel fires and expands into the same space.

[WillyHeckaslike]

What looks like an unmanned fuel station has recently appeared in our town. It is in fact a charging station for up to 6 electric vehicles and it is equipped to charge a lot faster than plugging in at home. Apparently you can add ~ 180 miles of range in about 20 mins and nearby Newcastle is earmarked for one too. Click

[Mike Noc]

That's progress for you - I can add 600 miles range in 2 minutes.

I have always filled up with the cheapest derv I can find and the injectors are original and still working fine.

[marinabrian]

Originally Posted by Mike Noc

That's progress for you - I can add 600 miles range in 2 minutes.

I have always filled up with the cheapest derv I can find and the injectors are original and still working fine.

I can confirm that Big Ron's injectors are among the best I've seen, and like Mike I use the cheapest DERV I can find.

You can kid yourself your car runs better using "premium" branded fuel, but I've tried them all, and it makes not one jot apart from the hit to your wallet, fine if you do 5000 miles a year, not so if you do 40,000 miles a year

Brian

[bl52krz]

The short answer and the long answer is no it does not. That is all I have ever bought. The only difference is that there are less additives in it. I use Redex in every other tankfull.

[clf]

Originally Posted by clf

Fuel will indeed come from a small number of refineries. What is different is the additives that manufacturers put into their fuel.

I can only say what I have found, on my car (my dad had similar findings). Using 'Go' fuel which is an unmanned fuel station, that sells fuel at supermarket prices (not sure if it is available on the mainland), and the car went fine, started fine, ran fine, and got for my commute around 420 - 430 miles for each tankful.

Started using Maxol (at their unmanned stations), and the car went fine, and started fine, but it felt a little more eager. It was different, nothing I could say was measurable, it just 'felt' different. When I first used it, it was purely to fill up, and not because it was a branded fuel. As it was convenient on my way home, I started to use it each time on my way home. (ironically it used to be the most expensive fuel on my route home, but now as cheap as the Go - plus it is beside an MG dealer). A fill will now get me 440 - 450 miles.

My dad said he noticed using the Maxol, he would get a few more miles out of a tank. But it like mine, was only about 10-15. He didnt notice any improvement on running though, but his is a petrol .

As I said, the different is just how it feels, it just seems more eager, just different, and I cannot even say it is faster or anything like that.

For super unleaded, or super duper diesel, I would suggest you would have to have the car mapped to suit. Or if an older car, the timing would need to be adjusted to take advantage of the extra rons and cetanes. All this 'cleaner burn' advantages may well be true, but I cannot see how it will make the piston throwdown faster within the same stroke whilst the fuel fires and expands into the same space.

I should add, my B4 and B5.5 Passats felt no different between fuels. Although the Xtype didnt seem to care what fuel was used, but apparently didnt like red (according to the service history at the dealer, there were traces of red usage in the fuel system, along with metallic particles suspected to be coming from the pump).

[The Rovering Member]

Originally Posted by marinabrian

You can kid yourself your car runs better using "premium" branded fuel

And there are thousands of people that do.

[Frank Incensed]

Originally Posted by BoroRover

Reading today that supermarkets will be, "slashing", diesel by 3p by the weekend, there was a claim their diesel is inferior, having additives that clog injectors. .......

It is concerning to read their product may cause problems.

I normally use Asda for my diesel. I'm thinking it may be wise to buy elsewhere.

I've used ASDA wherever possible, because I could rely on good performance. I've been loathe to other diesels because, a few years ago, tanks full of Morrisons and even Shell V-Power coincided with the engine running rough. I was told that these diesels contained a higher percentage of biodiesel than some other brands. I assume that such problems have by now been resolved, but trust is hard to regain.

[Mike Trident]

I generally fill up with sainsburys, and it runs fine. I have used shell and BP in the past, again it runs fine.

However, the last couple of fill ups have been with Esso, and although it runs the same I have noticed it's quieter. Less diesel noise.

[MSS]

I don't believe that any of the fuels would clog up injectors - all fuel sold in the UK meets a minimum specification. Driving variables are far more likely to determine whether a car's injectors clog up over time. Hence Mike Noc's experience highlighted above.

Having said the above, irrespective of who pumps the fuel out of the ground or who refines it, the additives determine differences between fuels sold by different chains. This does mean that the design of each fuel being sold is altered by the additives.

There was a set of tests done by the AA some years ago and it showed that Shell V Power produced around 7% better MPG than many other fuels. This is consistent with my own experience of V Power in a petrol and a diesel car. I prefer to use shell in all my cars and mostly V Power. I also add 75ml of Millers Ecomax to each tankful of diesel. This combination delivers a totally different responsiveness from the CDT than using other fuels without the Millers additive. Let's just say that I have never felt the need for any remaps etc.


Here is the thread from 2013 discussing the AA report. https://www.the75andztclub.co.uk/for...d.php?t=163356