Diesel variations

[mistericeman]

How did you come to the conclusion of how many MPG you got. Two tank fills is not an accurate indication, and if you rely on what the dashboard 'computer' states, these are notorious for being inaccurate. Over 20,000 miles mine has told different to accurately kept logs of every re-fuel, taking the mileage the vehicle has covered, from new.

Exactly....

Without the very accurate equipment and rolling road testing...
It's nigh on impossible to get accurate figures in real life.....

Wind direction/load/road conditions/variances in driving styles/temptatures/air pressure etc etc

All make it little better than guessing to say....
I got X last week and this week I'm getting Y

 

[Aethelric]

How did you come to the conclusion of how many MPG you got. Two tank fills is not an accurate indication, and if you rely on what the dashboard 'computer' states, these are notorious for being inaccurate. Over 20,000 miles mine has told different to accurately kept logs of every re-fuel, taking the mileage the vehicle has covered, from new.

I compared the dashboard computer to the brim to brim method quite a few years ago when I first got it. As I recall it was not far out and was consistent. We have done about 85,000 miles in the van and the dashboard display has been consistent. It goes down if I sustain a higher speed as expected of course.
The only time in it has gone down inexplicably was this 330 mile trip from Cornwall to Lancashire. Mpg was back to normal on the return journey.
I have done this trip many times before, and I hope I'll be doing it many times in the future, although the next one is a few months away.

What sort of variations did you get, and how long were your trips?

 

[Deleted member 83106]

When I was in the petrol industry it was common knowledge that some supermarkets bought low grade military fuel from eastern european countries, this fuel is made using a lower grade process and materials, tanks consume gallons per mile ! its octane rating was very low and you needed to be heavier with the accelerator pedal to get decent performance. Obviously that affects the mpg figure the same as this new 'winter grade fuel' will. You cannot add vegetable oils to fuel and expect it to give the same levels of performance, it will slowly be ruining your engine too......I have no idea where they source their supplies thesedays, but use V-power now for the performance and economy benefits.

 

[Aethelric]

When I was in the petrol industry it was common knowledge that some supermarkets bought low grade military fuel from eastern european countries, this fuel is made using a lower grade process and materials, tanks consume gallons per mile ! its octane rating was very low and you needed to be heavier with the accelerator pedal to get decent performance. Obviously that affects the mpg figure the same as this new 'winter grade fuel' will. You cannot add vegetable oils to fuel and expect it to give the same levels of performance, it will slowly be ruining your engine too......I have no idea where they source their supplies thesedays, but use V-power now for the performance and economy benefits.

Aha - I suspected dirty work was afoot.

 

[Whiskey46]

I always thought if you have to ask how much it does to the gallon you can't afford to run it

I had a workmate who drove a 4X4(on Lease) .
When I asked what it did to the gallon ( from the point of view of engine efficincy b

 

[Whiskey46]

I always thought if you have to ask how much it does to the gallon you can't afford to run it

I had a workmate who drove a big 4X4 (leased).I asked him whar the fuel consumption was ( from the point of view of engine efficiency and future reference )
He made that " very clever" response sayingthat " if i asked that ,I could'nt afford it", but if he put in £10.00 and it lasted for ages.
He coloured up when I said his problem was that could'nt work it out !!!!

 

[trevskoda]

I generally get better economy driving away from Cornwall than driving home to Cornwall and almost always put it down to wind

Change your diet.

 

[trevskoda]

I compared the dashboard computer to the brim to brim method quite a few years ago when I first got it. As I recall it was not far out and was consistent. We have done about 85,000 miles in the van and the dashboard display has been consistent. It goes down if I sustain a higher speed as expected of course.
The only time in it has gone down inexplicably was this 330 mile trip from Cornwall to Lancashire. Mpg was back to normal on the return journey.
I have done this trip many times before, and I hope I'll be doing it many times in the future, although the next one is a few months away.

What sort of variations did you get, and how long were your trips?

Veggie oil engines run much longer and cooler,its the low sulpher content these days which wrecks engines.

 

[peter palance]

Thanks for the replies. The drop from 32mpg and 27mpg costs the same as a diesel price jump from £1.50 to £1.78 per litre. Both fill ups were from Tesco, apart from a little top up from a BP garage. The drive up must have cost me and extra £13-£14.
I wonder if it was anything to do with the change to winter diesel - this is supposed to happen in November but probably varies around the country.

i use redex every other fill in my tank. runs well. but not in summer. you may like. you may not. seems to be running nicely. over to you. ok.pj. oh happy new year
running wise. i mean engin.

 

[peter palance]

What where the dates?

fat once. nice and jucie. ok.pj.

 

[peter palance]

Change your diet.

fatty oh or plumshus. which way but louse. go for it. ok.pj. happy new year

 

[canalboater]

I find when you stop bothering about miles per gallon and measure it in smiles per gallon instead your trips are a lot more enjoyable.
All the best when it comes people

 

[Harrytherid]

In my case I went to the NEC and back twice noting the mileage on GPS not odometer (forgotten now but about 450 miles there and back) and filling up at one particular pump each time then calculated the fuel use from that on each occasion and comparing what the computer told me with the result. I found the computer to be accurate on both occasions so have relied on it since.

 

[trevskoda]

Dont matter how many gallons to the mile they use, fact is if you want out then get the wallet out.

 

[Robmac]

When I was in the petrol industry it was common knowledge that some supermarkets bought low grade military fuel from eastern european countries, this fuel is made using a lower grade process and materials, tanks consume gallons per mile ! its octane rating was very low and you needed to be heavier with the accelerator pedal to get decent performance. Obviously that affects the mpg figure the same as this new 'winter grade fuel' will. You cannot add vegetable oils to fuel and expect it to give the same levels of performance, it will slowly be ruining your engine too......I have no idea where they source their supplies thesedays, but use V-power now for the performance and economy benefits.

There have been a lot of stories about Tesco providing very poor fuel in the past. I don't know how true they are but whenever my mate fills his Transit there he gets a 'Particulate Filter' (or something like that) warning light comes on.

I had problems a couple of years ago with Tesco fuel but very rarely use them now.

 

[Aethelric]

I think the problem may be to do with winter diesel. The change is supposed to happen in November and both of my fill ups were in December, but with the current covid driven chaos some garages may be out of sync.
I found this link which goes into a little detail.
https://dieselcar.com/stuff/doctor/chilling-thoughts-on-fuel-economy/

 

[TR5]

Personally, I have never had an issue with fuel from Tesco's or Sainsbury's, and have driven a lot of miles. I have also found no particular benefit of using V-Power diesel, as opposed to any other, and yes I have tried it and monitored the mileage over several fills, to no advantage.

I use Shell V-Power petrol (or the BP or Esso equivalent) in my Triumph TR5, as it needs the higher octane it was designed to use, as it would have been 101 octane 5 star fuel originally. It certainly doesn't like 95 or 97 octane fuel - at all, and still has an octane booster added at 99 octane.

 

[2cv]

Personally, I have never had an issue with fuel from Tesco's or Sainsbury's, and have driven a lot of miles. I have also found no particular benefit of using V-Power diesel, as opposed to any other, and yes I have tried it and monitored the mileage over several fills, to no advantage.

I use Shell V-Power petrol (or the BP or Esso equivalent) in my Triumph TR5, as it needs the higher octane it was designed to use, as it would have been 101 octane 5 star fuel originally. It certainly doesn't like 95 or 97 octane fuel - at all, and still has an octane booster added at 99 octane.

Tesco Momentum premium petrol is 99 octane.

 

[Robmac]

Personally, I have never had an issue with fuel from Tesco's or Sainsbury's, and have driven a lot of miles. I have also found no particular benefit of using V-Power diesel, as opposed to any other, and yes I have tried it and monitored the mileage over several fills, to no advantage.

I use Shell V-Power petrol (or the BP or Esso equivalent) in my Triumph TR5, as it needs the higher octane it was designed to use, as it would have been 101 octane 5 star fuel originally. It certainly doesn't like 95 or 97 octane fuel - at all, and still has an octane booster added at 99 octane.

Although it was rumoured as a nationwide problem with Tesco fuel, it may have been far worse at our local Tesco which apparently had dozens of complaints in a couple of weeks.

The same happened a few weeks later as well.

 

[Herman]

I would love to know how you all manage to get 30+ to the gallon, we have a 2017 2.3 Fiat and can only get 25MPG running about 65mph on the oddo which is 60mph on the satnav., we are not a low profile but I doubt it makes that much difference. What I have noticed is we normally fill up at a BP garage when we what to refill the gas bottle, Other times I will use supermarkets and Tesco's last time only returned 23MPG.