Member Since: 27 Mar 2006
Location: cornwall
Posts: 29
Dodgy supermarket petrol & your warranty
A friend in the dealership business (not a fuel retailer) tells me that the full effects of Supermarket fuel on modern engines have now reached a point where the manufacturers are declining Warranty claims due to the poor quality of fuel From Tesco/Morrison/Sainsbury etc......
He says: "I'm not allowed to disclose the actual information given to us by Renault but if you use the poor quality fuel it will cost you money. We are now required to ask for fuel receipts before entertaining an engine/fuel related warranty claim."
Not sure whether this mainly a petrol problem -- or diesel involved as well.
But scaaaaaaary!
28th Feb 2007 7:22 pm
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26702
Just watching the news, and it seems to be a local supply problem involving a contaminated batch of petrol. I did not hear anything mentioned about diesel.
I understand the manufacturers not wanting to foot the bill for contaminated fuel, its not their fault. But I don't think its a general refusal to accept superket fuelled vehicles for ever more.
28th Feb 2007 7:27 pm
simon
Member Since: 11 Jan 2005
Location: Shropshire
Posts: 18296
They say they get their fuel from the mae place as the big names do... but they sell it cheaper.
I'm sure someone here will know if this is fact or fiction
From articles I've read in the past in the motoring magazines, when doing fuel comparisons, there has been no noticeable difference between supermarket fuel and the big boys. Mosts tests are looking for performance differences, but I seem to remember reading one review where they took apart an engine to see if there was any further effects on the engine.Matt
28th Feb 2007 8:44 pm
DG Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50934
This was quite a prominent story on the 6 o'clock news .... heres some more info
Think it only affects petrol though.21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021
28th Feb 2007 8:48 pm
Mossy
Member Since: 01 Jul 2005
Location: Hollyoaks, UK
Posts: 2682
cornwallboy wrote:
A friend in the dealership business (not a fuel retailer) tells me that the full effects of Supermarket fuel on modern engines have now reached a point where the manufacturers are declining Warranty claims due to the poor quality of fuel From Tesco/Morrison/Sainsbury etc......
But how would they [the dealers] know where you get your fuel from? And surely if the fuel comes up to ISO or whatever standard covers fuel, as defined by the standard, then they have to honour the warranty?
Well if I go into Tesco supermarket I can buy proper corn flakes from Kellogg’s or some horrible value ones. Same shop, same argument
Or in car terms, if I go to kwik fit I can buy a "lee-che-qua-fong" quality tyre or a BF Goodrich, Goodyear, Pirelli etc !!"To finish first, one first has to finish ...."
28th Feb 2007 9:52 pm
Chris200100
Member Since: 22 Mar 2006
Location: Nr Cardiff
Posts: 532
I used to work in tesco's petrol station and I can confirm that they got their fuel from the four (now only three) local depots, two are texaco, one is Total, and now closed one was BP.
Even the big names like Shell, Bp etc get fuel from each others depots. the nearest Shell depot is stanlow and I can't see them delivering fuel from there for a Shell petrol satation in bridgend.
The ONLY diffrence in the fuel is the additive they each use their own, and tesco did buy shells additive when I work there.
The additive is added while the tanker is driving along theres a small tank under the main tanks.
All fuel in this country is made to BS standard, Diesel is BS590.Focus ST500
Range Rover Classic
other modes of transport:- Volvo FM13 Globetrotter (13L 440bhp, 2200nm) nice new one
28th Feb 2007 10:05 pm
DiscoStu
Member Since: 09 Apr 2006
Location: London
Posts: 11412
Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18456
Did the price go up after Buncefield?06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
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3rd Mar 2007 4:48 pm
Winger Site Moderator
Member Since: 15 Feb 2005
Location: UK
Posts: 3428
In the big picture, the amount of gasoline involved is small; there would, though, appear to be an opportunity for the major retailers to increase their prices as people flock to brand name stations and avoid the supermarkets.
This, I suspect, will be shortlived, as once the supermarkets have restocked, they will be looking to cut their prices to attract sceptical buyers back onto their forecourts. The competition will then follow suit.
So, I'd suggest that the outcome of this debacle might actually mean lower prices in the near to medium term.
3rd Mar 2007 5:57 pm
DiscoStu
Member Since: 09 Apr 2006
Location: London
Posts: 11412
If the silicon in the unleaded petrol contaminates the Oxygen sensor such that this ceases to function then it will also be coating the active surface of the catalytic converter making it totally useless - this will not cause any change in engine performance but it will mean that your vehicle will fail its next MOT emissions test and a catalytic converter will cost several hundred pounds to replace and refit. The only way to check this is to pay the garage to have the exhaust emissions test done
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-up and then get us to foot the bill 
