Discussion
W 4.O TUS said:
Tesco top grade fuel is ace, just filled up and pops and bangs like a good un
Please Please Please be carefull with supermarket fuel, obviously I cant go into detail as they are bigger than me
but please be very very carefull. I know it will pop and bang and sound great but if thats what you want try the Total excellium.
YI8TVR said:
W 4.O TUS said:
Tesco top grade fuel is ace, just filled up and pops and bangs like a good un
Please Please Please be carefull with supermarket fuel, obviously I cant go into detail as they are bigger than me
but please be very very carefull. I know it will pop and bang and sound great but if thats what you want try the Total excellium.
What's so bad about it?
[quote=YI8TVR
Please Please Please be carefull with supermarket fuel........please be very very carefull.
[/quote]
What is it about supermarket fules that warrant so many "please be carefulls"? Will it wreck the engine? Does it ruin the cats? Does it cause fires? Will it cause pops and bangs so loud it will shatter your windsreen and deafen you at the same time?
Please Please Please be carefull with supermarket fuel........please be very very carefull.
[/quote]
What is it about supermarket fules that warrant so many "please be carefulls"? Will it wreck the engine? Does it ruin the cats? Does it cause fires? Will it cause pops and bangs so loud it will shatter your windsreen and deafen you at the same time?
yep thats a true TVR owner 
Gents, on the face of it there really isn't a great deal of difference because all petrol sold in the UK (regardless of whether the fuel is sold at an oil company's filling station or at the supermarket) must conform to BS EN228 (Premium Unleaded) which is the CEN (European Committee for Standardisation) petrol standard applicable to the UK. The facts of the matter are that 1) refiners have an economic incentive to blend close to the spec & not to give away octane and 2) retailers do NOT typically supply their own outlets with petrol exclusively from their own source(s). So, for example, a Texaco station can be supplied by Shell and so on (usually for logistical reasons, i.e. supply cost). Having said that, different companies often add their own additives before the petrol hits the forecourt. These are usually detergents that help to keep intake valves & fuel injectors clean & free of deposits. As far as the top end of the market goes (Super Unl) the same applies but there are exceptions like Tescos 99 Octane which is supplied exclusively by Greenergy. This fuel has a low olefin content (olefins can lead to engine deposits) & usually includes about 5% ethanol in the blend which I think contributes to the crackle & pop on the over run that many have commented on.
jcpgasoline said:
Gents, on the face of it there really isn't a great deal of difference because all petrol sold in the UK (regardless of whether the fuel is sold at an oil company's filling station or at the supermarket) must conform to BS EN228 (Premium Unleaded) which is the CEN (European Committee for Standardisation) petrol standard applicable to the UK. The facts of the matter are that 1) refiners have an economic incentive to blend close to the spec & not to give away octane and 2) retailers do NOT typically supply their own outlets with petrol exclusively from their own source(s). So, for example, a Texaco station can be supplied by Shell and so on (usually for logistical reasons, i.e. supply cost). Having said that, different companies often add their own additives before the petrol hits the forecourt. These are usually detergents that help to keep intake valves & fuel injectors clean & free of deposits. As far as the top end of the market goes (Super Unl) the same applies but there are exceptions like Tescos 99 Octane which is supplied exclusively by Greenergy. This fuel has a low olefin content (olefins can lead to engine deposits) & usually includes about 5% ethanol in the blend which I think contributes to the crackle & pop on the over run that many have commented on.
Your comments are indeed spot on, this is why not so many moons ago a certain supermarket branded fuel had an excess of silicon in its deisel which I am led to believe is supposed to be used in petrol to stop throthing and consequently blocked the fuel filters in the vehicles and had a possible affect on the fuel sensors. If I remember rightly this only affected one brand..
Again I could be wrong.
Edited by YI8TVR on Wednesday 16th May 20:53
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