15-07-2021, 08:08 AM
To answer your questions:
1. Do you obtain your fuel from a certain Supermarket or only from a brand name supplier, say Shell?
For the past 16 months fuel supply has been almost exclusively from Sainsbury (because they have card payment at the pump), same site
2. Which grade do you purchase i.e Standard unleaded, Super Unleaded, Octane rated 95,97 or 99, etc?
Standard unleaded E5 95RON
3. Do you add anything to the petrol before using such as Valvemaster or similar lead replacement substance?
No, straight from the nozzle
4. How long have you made your choices and how does it suit your Seven?
16 months, previously was using an independent (mostly), have used other petrol when needed to fill up, such as BP & Texaco, and not noticed any difference, fuel consumption averages out at around 35mpg, long runs look at around 40mpg, although at one fill-up on the trip to the Beaulieu Rally last weekend I achieved 49mpg!
The only issue I have experienced was fuel vapourisation, three occasions, once last year on the hottest day - light traffic making good progress at around 25mph when the engine died, and twice this year, April & June, not particularly hot, but crawling slowly in traffic for about 10 minutes both times. Pumping the primer on the mechanical fuel pump (why the engine could not have maintained this...) restored service and on the way again after just a few moments. I have since changed the diaphragm to the fuel pump and last year after the first problem, put an exhaust wrap around the downpipe and fitted heat reflecting material to the underside of the flitch plate. I now keep a jar of water and a chamois leather to provide a damp wrap to the fuel pump. The fuel pump is hotter to the touch than the now wrapped exhaust pipe...
1. Do you obtain your fuel from a certain Supermarket or only from a brand name supplier, say Shell?
For the past 16 months fuel supply has been almost exclusively from Sainsbury (because they have card payment at the pump), same site
2. Which grade do you purchase i.e Standard unleaded, Super Unleaded, Octane rated 95,97 or 99, etc?
Standard unleaded E5 95RON
3. Do you add anything to the petrol before using such as Valvemaster or similar lead replacement substance?
No, straight from the nozzle
4. How long have you made your choices and how does it suit your Seven?
16 months, previously was using an independent (mostly), have used other petrol when needed to fill up, such as BP & Texaco, and not noticed any difference, fuel consumption averages out at around 35mpg, long runs look at around 40mpg, although at one fill-up on the trip to the Beaulieu Rally last weekend I achieved 49mpg!
The only issue I have experienced was fuel vapourisation, three occasions, once last year on the hottest day - light traffic making good progress at around 25mph when the engine died, and twice this year, April & June, not particularly hot, but crawling slowly in traffic for about 10 minutes both times. Pumping the primer on the mechanical fuel pump (why the engine could not have maintained this...) restored service and on the way again after just a few moments. I have since changed the diaphragm to the fuel pump and last year after the first problem, put an exhaust wrap around the downpipe and fitted heat reflecting material to the underside of the flitch plate. I now keep a jar of water and a chamois leather to provide a damp wrap to the fuel pump. The fuel pump is hotter to the touch than the now wrapped exhaust pipe...