Which fuel

[motormadmarc]

No, it doesn’t. Water and petrol don’t mix.

Ok, let me rephrase It then so you do understand what I'm saying. When I said watering down, I meant adding certain chemicals to the fuel.Therefore diluting (thinning out) the fuel to a lesser consistency than It was before the chemicals were added.
Is that a better explanation of what I meant by the term, watering down?

 

[Educated Scruff]

Sorry but petrol is hygroscopic and absorbs water and typically most petrol contains 0.5% of water.

 

[motormadmarc]

Sorry but petrol is hygroscopic and absorbs water and typically most petrol contains 0.5% of water.

Are you serious or just messing about? If you read my above post properly you will see that I didn't actually mention that any WATER Is added to the fuel, period. Watering down Is just another way of saying that something has been thinned out or diluted from Its original form. So when the chemicals are added the fuel becomes watered down, get It?

I think your just pulling my leg aren't you ?

 

[Educated Scruff]

No petrol does absorb water and it normally has 0.5% at the pump ( filling station sump ) I’m actually agreeing with you.

 

[motormadmarc]

No petrol does absorb water and it normally has 0.5% at the pump, I’m actually agreeing with you.

 

[RUM4MO]

On a more serious note, winter and summer DERV and Petrol do exist, and in the case of petrol, minimising water getting into the fuel probably mainly due to tanks "sweating" will be the aim, though most modern fuel tanks are plastic so not affected so much as older steel tanks.
I totally agree that in UK at least, the basic petrol spirit is meant to be the same from all refineries and so to avoid moving branded fuel around the UK to refill branded filling stations, the main brands swop/exchange capacities to improve logistics, and, the "proper" filling station main brands are only relevant to the selling of that fuel, filling station logistics and filling station management has mainly been outsourced to a 3rd party. Where the dispensed petrols differ will be on the added chemicals - ie the part that changes the basic spirit into something fit for burning through modern engines - and that, it seems, is a high value component and only the "big" names/brands use expensive additive packages, the rest will save a bit of cash by choosing something much cheaper and maybe not as good for all engine types under all conditions. There also, at least, used to be the issue with some UK based refiners "refining the product further up the stack" to achieve higher/highest RON fuel - I think that nowadays the refining process maybe for all fuels is cheaper and an extra much cheaper but one with lower thermal energy, is added to lift the RON number, and that is aid to be why fuel economy does not always improve with all higher RON fuels - purely as the "specific energy" or any other more correct term, can be lower for these higher RON fuels.

Not only Tesco's supplier that will have messed up, Shell made a major F'up many years ago, and I avoided using them for years after they did that!

 

[Seriously?]

Not only Tesco's supplier that will have messed up, Shell made a major F'up many years ago, and I avoided using them for years after they did that!

Ah yes, I remember it well. 'Formula Shell'. I ran a Vauxhall Nova SR at the time that pinked like crazy on it. Vauxhall engines in general (as well as others) hated the stuff.

 

[RUM4MO]

Yes most complaints seem to be from VX users, which is weird, in Scotland, Fife Police had massive issues with engine damage on their Vauxhall fleet, which hopefully was corrected from claimed damages from Shell, that just should not have happened, complete lack of testing in the real world!

I was not aware of my Ford CVH engine, objecting to being fed that stuff, plus the Shell filling station I used had a amazing range of DIYer car stuff like racks of all pipe types etc, so it was a bit annoying to need to stop using Shell for maybe 10 or more years, just to play my part in teaching them a lesson as I think many others did.