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Kymmy · 28-03-2011, 11:29

Only difference between sellers of petrol is additives, the petrol is the same no matter where you buy it from as for example in Manchester it'll all come from the Irlam depot.

I notice though a lot of people on here are getting confused between regular and super which is purely the octane rating.

Supermarket petrol will have less additives in it (added when it's pumped into the tanker) which may be detergents or a better lead alternative. Over a 1000 miles it won't make much difference but over 100,000 you may see a difference but then again it all depends on the state of the engine, oil used, last serviced, style of driving..etc.. but on a test bench there are noticeable results..

So in short buy cheap and there shouldn't be an issue, in fact buying cheap at a supermarket where there's high demand is likely to give you fresher petrol (it does have a shelf life) than buying from a branded garage in a smaller part of town.

28-03-2011, 11:29	#26
Kymmy Inactive Join Date: Dec 2007 Posts: 18,398	Re: Is supermarket fuel good enough? Only difference between sellers of petrol is additives, the petrol is the same no matter where you buy it from as for example in Manchester it'll all come from the Irlam depot. I notice though a lot of people on here are getting confused between regular and super which is purely the octane rating. Supermarket petrol will have less additives in it (added when it's pumped into the tanker) which may be detergents or a better lead alternative. Over a 1000 miles it won't make much difference but over 100,000 you may see a difference but then again it all depends on the state of the engine, oil used, last serviced, style of driving..etc.. but on a test bench there are noticeable results.. So in short buy cheap and there shouldn't be an issue, in fact buying cheap at a supermarket where there's high demand is likely to give you fresher petrol (it does have a shelf life) than buying from a branded garage in a smaller part of town.