Supermarkets vie to cut fuel prices

Edwood_Woodwood

bigjl wrote: »

I will stick to a know quality fuel with a decent additive package thanks.

This old chestnut.

It's a myth mate.

forgotmyname

I agree its all a myth, but i did fill one of my previous Diesel Mondeo's at Tesco and it made a knocking noise within a few hundred yards.

Coincidence? Probably but i wont fill up at Tesco's again. I use Sainsbury's its the fuel for posh people

Edwood_Woodwood

forgotmyname wrote: »

I agree its all a myth, but i did fill one of my previous Diesel Mondeo's at Tesco and it made a knocking noise within a few hundred yards.

)

It may have been that the fuel station had just been replenished which stirs up the sediment of the underground tanks.

I had a Mondeo tdci and it was still running fine at 320k and I only sold it as I was offered a great price for a Passat.

Ran the Mondeo on, mostly, Asda diesel, since I bought the mondeo on 90k.

Rubidium

Have the brand snobs and supermarket fuel myth believers forgotten about when Shell launched a new 'super formula' fuel back in the eighties that actually caused serious damage to many engines!

neilmcl

DragonQ wrote: »

So many anecdotes about cars "feeling" different when it is a well known fact that confirmation bias and placebo hugely distort our subjective views. Where are the data?

Sometimes, a "feeling" counts more than data. I know for a fact that my old BMW diesel ran pretty rough on Morrisons fuel and would enter a DPF regen more frequently.

takman

neilmcl wrote: »

Sometimes, a "feeling" counts more than data. I know for a fact that my old BMW diesel ran pretty rough on Morrisons fuel and would enter a DPF regen more frequently.

That basically means that you are happy to pay extra for the placebo of thinking that the car is running better.

I run my car on bulk diesel, it doesn't have any kind of brand name or additives and meets the minimum requirements of all Diesel sold in the country. I have data showing that over 3 years of ownership it consistantly gives more than the combined MPG. I also had it on a Dyno a few weeks ago and it was exactly the horsepower it is supposed to be, even though it has done over 190,000 miles. So this shows that basic Diesel is perfectly fine for my engine.

So unless there is data showing that branded diesel is better for an engine why would you pay more for it?.

Aretnap

forgotmyname wrote: »

Coincidence? Probably but i wont fill up at Tesco's again. I use Sainsbury's its the fuel for posh people

Pleb! I only use Waitrose petrol.

jimjames

bigjl wrote: »

I drove through Dagenham last week and the petrol was cheaper at a BO Station than at the local supermarket, by 2p a litre.

Did it smell really bad there?

forgotmyname

Aretnap wrote: »

Pleb! I only use Waitrose petrol.

Is that the gold label stuff in 250ml bottles delivered by a man in a Tux and he even fills your tank and washes the car? I wish i were that rich

DragonQ

neilmcl wrote: »

Sometimes, a "feeling" counts more than data. I know for a fact that my old BMW diesel ran pretty rough on Morrisons fuel and would enter a DPF regen more frequently.

This is why we need more focus on, and funding for, science education.