Supermarket vs. branded petrol.. your opinion?

[yorkie_chris]

I'm open to being proven wrong on that number... but anyway, bits of pump breaking down seem to be the main cause of injectors breaking rather than fuel contamination, and that would explain the crap in the tank.

Ever known diesel bug in a car?

Originally Posted by yorkie_chris

I'm open to being proven wrong on that number... but anyway, bits of pump breaking down seem to be the main cause of injectors breaking rather than fuel contamination, and that would explain the crap in the tank.

Ever known diesel bug in a car?

you may be right, a mate who works for the rac,mostly inspecting cars,told me that almost all low pump pressure problems on common rail,can be traced back to misfueling,and as little as a egg cup full in a tank will cause damage,but this might take thousands of miles for the problem shows its self,i have no solid proof this is correct or not,but i do know when they go wrong it can soon cost a lot of money to put right

Originally Posted by andrewsmith

Nope I will not buy Tesco fuel as its so poor my bike runs like a bag of hammers
99 Ron is slightly better

That's all my curvy would run on in the cold winter months. I use Esso standard unleaded in my pointy, but only because its on my way to work. Have tried other fuels and noticed no difference in performance or economy on the sv, including BP, Tesco, Shell etc

Used to use Super unleaded when I had an Alfa, drove much better on that. Bland car these days so no need for super, lol.

[yorkie_chris]

Aye that's common rails for you.

I think problem is modern ULSD has next to no lubricity so it doesn't take much petrol in it to completely knack the job.

I need to find a tame misfuel specialist to take all that nasty, horrible mixed up fuel off their hands if you know of any!

[maviczap]

Originally Posted by yorkie_chris

Aye that's common rails for you.

I think problem is modern ULSD has next to no lubricity so it doesn't take much petrol in it to completely knack the job.

I need to find a tame misfuel specialist to take all that nasty, horrible mixed up fuel off their hands if you know of any!

Strange you say this & I'd agree with you normally, as misfuelling was the demise of many a diesel fuel pump or top end. I did a Vauxhall cavalier head by sticking petrol in it & driving a couple of miles back to work.

However one of the numpties at work put petrol in one of our VW Crafters without my knowledge. I drove it a good 20 miles, feeling that something wasn't quite right, it still ran, just a bit rough. I couldn't stop as I was on the motorway, but it was still doing 70mph no problem, just no get up & go.

When I could stop, I opened the filler cap & immediately smelt the petrol.

Guy came the next day, took all the bad fuel out, & put a few liters of diesel in it. He said that it was less of a problem mis-fueling modern diesels.

That vans still going strong, and that was August 2012.

It was almost a half a tank of petrol at least.

[DJ123]

Originally Posted by maviczap

Strange you say this & I'd agree with you normally, as misfuelling was the demise of many a diesel fuel pump or top end. I did a Vauxhall cavalier head by sticking petrol in it & driving a couple of miles back to work.

However one of the numpties at work put petrol in one of our VW Crafters without my knowledge. I drove it a good 20 miles, feeling that something wasn't quite right, it still ran, just a bit rough. I couldn't stop as I was on the motorway, but it was still doing 70mph no problem, just no get up & go.

When I could stop, I opened the filler cap & immediately smelt the petrol.

Guy came the next day, took all the bad fuel out, & put a few liters of diesel in it. He said that it was less of a problem mis-fueling modern diesels.

That vans still going strong, and that was August 2012.

It was almost a half a tank of petrol at least.

Did that to my last car. Except I filled the tank nigh on full of petrol. Managed to syphon out all bar 15 litres of it. Over the next few days I was driving it and filling up with diesel soon as I'd used a gallon or so. The horrid part was the random kangooering as a lump of petrol was taken up, or the hesitant starting if petrol was up at the injector rail end. only took 5 days or so and it was back to normal (I don't cover many miles in the car) Car was perfect after and there was no noticeable difference to the car. although I think a large part of that was down to my engine[it was a 1.8 TDCI Focus, which started off in life as the Lynx engine designed between Ford & Peugeot as a Diesel engine which was upgraded throughout the next generation to TDI & TDCI.

[yorkie_chris]

Odd, they should be fully miscible almost immediately.

[maviczap]

Bloke who drained the tank said that the more modern pumps were built to survive mis-fueling.

Don't know if that's true, but in this incident the van is still fine after plenty many more miles since being fed petrol

I use Asda diesle in the 4x4 but always try to use Tesco 99ron in the bike anything else and it runs sh*t, my bike is made to take advantage of premium fuels and says use min 98ron, Tesco's are the only ones that use higher than 97 ron.

[shiftin_gear98]

I used to put any old petrol in the bike can't say I every really cared if I needed fuel I'd fill up. However I now have a company Shell fuel card, so my bike now gets the good stuff Optimax all the way!
I've been using it about a year now can't really say I've noticed a whole lot of difference, except that it doesn't feel so bad driving to work when someone else is paying, especially in the summer on the extended detour.