Costco Premium Diesel

[rmo69]

Our local Costco has opened a fuel forecourt, and sell premium unleaded and diesel only. I filled up 4 tanks ago for the first time, and the fuel gauge plummeted to the ground like a stone, but I thought I'd persevere. The results after 4 tanks have been really impressive, I was averaging about 460 miles between fill ups, and this has increased to about 520 miles. Also, on supermarket diesel, it was doing three regens per tank without fail. On the last two tanks its done two. It's also only £1.18 a litre which is a real bonus.

Not massively scientific I know, but thought it was worth a share.

 

[Tourershine]

I only ever use Shell V-power and on the odd occasion BP Ultimate, and I can get around 500 miles between fills if i'm driving really gingerly as I now seem to do after getting busted again for speeding.
I've never tried cheaper fuels, so wouldn't know the difference in distance.

 

[Lukavell]

I found the same in a Golf GTD I had a few years ago. Did the maths and the increased MPG made the V-Power cheaper by the mile, not much but it was. Not only that the car seemed to loosen up a bit and became more responsive and ghus better to drive. Win, win! I always use it if it's available.

 

[Dieseldonkey]

@rmo69. Can I ask what mileage is on your van. Been doing a similar experiment. Last two tanks have been V-power instead of Tesco. Like you, I've witnessed considerably fewer regens. (Although ambient temperature has been lower).

However I'm just over 12000 miles and wonder if as @Pauly mentioned in a previous thread, this is due to regens settling down a bit as the mileage goes up.

 

[Tourershine]

@rmo69. Can I ask what mileage is on your van. Been doing a similar experiment. Last two tanks have been V-power instead of Tesco. Like you, I've witnessed considerably fewer regens. (Although ambient temperature has been lower).

However I'm just over 12000 miles and wonder if as @Pauly mentioned in a previous thread, this is due to regens settling down a bit as the mileage goes up.

Mine's done 8000 miles now, and the re-gens are just as often as they've always been, and I've never used anything other than premium fuel from 0 miles.

 

[gl3n]

The fuel Costco sell is Shell but I may be wrong! That’s what they told us at the station!

 

[RattyMcClelland]

Active regens are more frequent as mileage goes up. 3 to 4 per tank.
Shell normal vs v power made no difference to mpg over 10k measuring on fuelly on my van.
However v power is a cleaner fuel so I use it and get more points.

 

[rod_vw]

Now this may seem strange to many we've got a Euro5 T6 with DPF that has done 15,000 ish miles and we have never been aware of it ever doing a Regen! Maybe this is because it gets reasonably frequent quick motorway trips.

It's always run on supermarket fuel no preference, just whichever is the cheaper both here and in Europe.

And no it doesn't show any faults on a VCDS scan.

Fuel consumption works out at 35.7MPG over the full distance since new and a little drop of that is used in the Eberspacher which we have no qualms about using on any cold day even to go shopping or all night when camping.

By the way the fact that it is a high-top which will have a detrimental effect on the fuel consumption.

Rod

 

[rmo69]

@Dieseldonkey just coming up for 11K. I am definitely getting more mpg and fewer regens, but it could be coincidence (ambient temps & conditions). Don't know really, going to keep going with it and see what happens. What I do tend to find is that I get better mpg if the weather is slightly warmer.

 

[rod_vw]

@Dieseldonkey just coming up for 11K. I am definitely getting more mpg and fewer regens, but it could be coincidence (ambient temps & conditions). Don't know really, going to keep going with it and see what happens. What I do tend to find is that I get better mpg if the weather is slightly warmer.

I will totally agree with the better fuel consumption in better weather especially noticeable when doing short runs. I have a particular stretch of road that we use on a very regular basis from leaving home to about two miles away which is not particularly exposed to the wind so excepting unusual traffic conditions is a good 'yardstick' for comparisons. On frosty/cold days the average from start is noticeably lower at the 'marker' point in the journey than when the temperature is above five degrees or so. I guess that this is the reason for the coolant fluid heater that is fitted to some models. Obviously when the journeys are longer this lower consumption with a cold engine at the first part of the trip gets evened out if you see what I mean.

Rod

 

[rmo69]

The fuel Costco sell is Shell but I may be wrong! That’s what they told us at the station!

If it is Shell V-Power, then it's a damn sight cheaper at Costco!

 

[Mooncat]

Now this may seem strange to many we've got a Euro5 T6 with DPF that has done 15,000 ish miles and we have never been aware of it ever doing a Regen! Maybe this is because it gets reasonably frequent quick motorway trips.

The Euro 5 is a bit more discrete on the active regens. I've never noticed the tornado the Euro 6 owners get, just a slightly increased idle speed and sometimes you notice a burning rubber type smell. If you listen carefully, you'll also hear the injection noise changes too. Must owners wouldn't notice it to be honest.

 

[Ksar el Kebir]

The Euro 5 is a bit more discrete on the active regens. I've never noticed the tornado the Euro 6 owners get, just a slightly increased idle speed and sometimes you notice a burning rubber type smell. If you listen carefully, you'll also hear the injection noise changes too. Must owners wouldn't notice it to be honest.

I got almost 50 mpg last April from Ksar el Kebir to Essaouira in Morocco about 650 km. To be fair I kept around 100kph and there weren’t many hilly sections. When I got back to Blighty I had the first oil change and I suspect a software update as I’ve never got over 46 mpg since!