Fifth Gear: 'cooking' versus premium diesel

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Sun 9 Oct 2011 22:08
Fifth Gear: 'cooking' versus premium diesel - craig-pd130

This passed me by at the time, so apologies if it's been covered before: here's a link to Fifth Gear's test of V-Power and Ultimate diesel versus ordinary supermarket stuff, using a newish Citroen C5 2.2 as the testbed (4 minute video clip).

Both the premium fuels gave 161bhp compared with 155 on the ordinary stuff. What WAS upsetting was that V-Power and Ultimate were 100.9 pence per litre at the time :-/

http://www.youtube.com/watch?v=ezjknhwcQXU

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Mon 10 Oct 2011 14:48
Fifth Gear: 'cooking' versus premium diesel - Bobbin Threadbare

Honest John loves his V-Power. I like to put that in my car too, when it's not too expensive, as a little treat for it.

Oh those were the days!! £1 a litre!

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Mon 10 Oct 2011 18:41
Fifth Gear: 'cooking' versus premium diesel - NARU

The extra QE means we'll soon be paying more!

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Mon 10 Oct 2011 20:55
Fifth Gear: 'cooking' versus premium diesel - Sofa Spud

I thought this was going to be one of those threads about running a diesel engine on unfiltered, untreated chip oil !!!

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Tue 11 Oct 2011 11:15
Fifth Gear: 'cooking' versus premium diesel - madf

I found premium diesel made zero difference to performance and economy. Audi A4 and Yaris.

So why pay more for marketing hype?

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Tue 11 Oct 2011 11:34
Fifth Gear: 'cooking' versus premium diesel - dervdave

I found premium diesel made zero difference to performance and economy. Audi A4 and Yaris.So why pay more for marketing hype?

I found that the 2.7d Jag DPF didn`t regen so often and all the diesels I`ve had ran smoother and quieter.

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Tue 11 Oct 2011 15:51
Fifth Gear: 'cooking' versus premium diesel - craig-pd130

Likewise, in both my Passat PD130 and Mondeo IV TDCI I didn't find any noticeable difference from using Ultimate or V-Power.

I was just interested to see that a) a back-to-back comparison dyno test had been done and b) it had found a small but measurable power boost.

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Tue 11 Oct 2011 21:29
Fifth Gear: 'cooking' versus premium diesel - outlier

What is the statistical signficance of the measured difference..?

... a cold day might make the same difference.

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Wed 12 Oct 2011 08:34
Fifth Gear: 'cooking' versus premium diesel - craig-pd130

About a 4% increase on both premium diesels.

The test used a chassis dyno, on which the driven parts bolt directly to the driven wheel hubs (eliminating tyre slip on conventional roller dynos).

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Thu 13 Oct 2011 06:37
Fifth Gear: 'cooking' versus premium diesel - 1litregolfeater

Do you really believe this marketing nonsense?

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Fri 14 Oct 2011 11:10
Fifth Gear: 'cooking' versus premium diesel - dervdave

Do you really believe this marketing nonsense ?

Have you watched the independent 5TH Gear video ?

Fact....... 6bhp more !

Edited by dervdave on 14/10/2011 at 11:11

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