m.p.g. inprovement

lufcdave7

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It worked, just like they said it would. I had my doubts, but there is no doubting the results. Just arrived outside Dover having driven two legs over two days. Driven 300 miles fully loaded, water, fuel, food and clothes for three weeks. Normally average between 22 to 23 mpg when loaded for just a long weekend. This trip averaged 26.2 mpg. There was hardly any wind, so can't put it down to a following wind. Never before has the trip computer hit the 26 mark. That's a good 3.5+ mpg increase and all for a small investment of £10, well pleased!
 
MPG Improvement

Hello, We would all be WELL PLEASED !! if we knew what you were so exited about, it,s nice to share!! ,LOL :mad1:
 
He's got the family pushing it up the hills. :lol-049:

They work cheap as well, all that work for £10. :cheers:
 
There you go then. We all say that anyone can dramatically improve their fuel economy by simply driving a bit slower and developing a light touch on the accelerator pedal.

In fact, the experts say that that is the ONLY way to do it.
 
I was in Chamonix last year and got a 'flat'.
Popped along to a tyre place to get some help.
I had previously had some advisories with my MOTs that the tyre walls were begining to show signs of deterioration. So was considering changing them - on original tyres, 10 years since new.
Even though it was only the valve I decided to get 'a full set' whilst I was there.
I had a set of Hancooks put on with a set of metal valves.
The difference in the ride was so noticeable straight away. Smoother and quieter by a long long way.
But even better - on average I now fill up every 400 miles, not the 360 that it used to be.
That's as good as a 10% saving in my book.

And the next time we do the Grand Saint Bernard and Petit Saint Bernard Passes to get from Aosta to Chamonix it will be a little safer!!
 
Not even close any of you, although I thought Wastebin had got it.
The secret is.......NITROGEN. I recently had all the wheels fitted with new nickel plated high pressure valves and the tyres were re-inflated with 100% nitrogen by ATS. The lads who did the job said they have all experienced between 3 to 6 mpg improvements and claim a better 'ride'.
 
Well there we go, must say I have never heard of this one. I had to check that it was not the 1st of April. Will be interested to hear if anyone else has this done. Sounds cheap at £10.

Sooty
 
Had mine filled with 80% nitrogen and it did not make a diffence;)
 
The main advantage of using Nitrogen is that it does not 'bleed' through the rubber tyres. Once inflated, the pressure should never alter.

As for more mpg, I would like to know if there is any other evidence of this. It might even be the fact that the pressures were wrong before the Nitrogen was pumped in.

Air and Nitrogen can both be used in Pneumatic systems with the same effect, so I doubt if there is much difference. However, I am keen to learn and will apologise if proven wrong. :bow:
 
I'm sorry to pour scorn but 45psi IS 45psi wether it's filled with air (45% Nitrogen from memory of school physics) or 100% Nitrogen!!!!!!!!!!!!

Racing teams have used it for years as it expands less with heat so a cold fill at 20psi will not be much higher when at full working temp', and as said it also deflates far slower!

But that's it... if there's an MPG saving it's because you were running under inflated before, or the guys using Nitrogen have over inflated your tyres - can you recheck your tyres with your original gauge?? (Remember the first time you reinflate your tyres you will have diluted the 100% pure fill).
 
Gullible!

Isn't it amazing what we believe in and how our belief can alter our reality. If you look up the actual facts regarding the use of nitrogen in tyres you will find that unless you taking your camper to altitudes of 30,000 feet or planning to drive in temperatures of -30c you won't gain a thing by using nitrogen.

On the other hand - even minor variations in driver technique can easily make 10% difference. A friend of mine is an advanced driving instructor and regularly sees fleet-wide improvements to fuel economy of 10%+ following a simple seminar and demonstration drive delivered to fleet drivers. So, if you expect to see benefit from some device that chances are that you will.

On a serious note it is also well worth paying attention to which brand of fuel works best for your vehicle. Although the base fuel likely comes from the same refinery each distributor adds a slightly different additive package. One or another of these may work best for your brand of engine or age/condition of engine.

Tyres also make a huge difference but greater tyre pressure won't necessarily improve things. Read up on the first bicycle race won my Dunlop. He won precisely because the soft, air inflated tyres 'gave' over bumps and irregularities in the road unlike the solid tyres of his competitors which bounced thus reducing forward motion.

Conclusion - save yourself £10 and do something that will really make a difference.
 
LDV Camper said:
On the other hand - even minor variations in driver technique can easily make 10% difference. A friend of mine is an advanced driving instructor and regularly sees fleet-wide improvements to fuel economy of 10%+ following a simple seminar and demonstration drive delivered to fleet drivers. So, if you expect to see benefit from some device that chances are that you will.

On a serious note it is also well worth paying attention to which brand of fuel works best for your vehicle. Although the base fuel likely comes from the same refinery each distributor adds a slightly different additive package. One or another of these may work best for your brand of engine or age/condition of engine.

Conclusion - save yourself £10 and do something that will really make a difference.
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Indeed. I get far more mpg from The best deisel at say BP than I get from supermarket stuff. All summer though I burn Rape seed oil 100% and I get about 10% more miles than on deisel. I also dont have to change the fuel filter so often with veggie. The only down side with veggie was when I first started to use it, it really cleaned the system out, and had to change filters twice in 4 months. Also every time I pull into the kerb I get a Q at the side window for cod and 3 pennyworth:have fun::lol-053:
 
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Svo!

donkey too said:
Indeed. I get far more mpg from The best deisel at say BP than I get from supermarket stuff. All summer though I burn Rape seed oil 100% and I get about 10% more miles than on deisel. I also dont have to change the fuel filter so often with veggie. The only down side with veggie was when I first started to use it, it really cleaned the system out, and had to change filters twice in 4 months. Also every time I pull into the kerb I get a Q at the side window for cod and 3 pennyworth:have fun::lol-053:
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Agreed. I used to run an old Mercedes 307D which performed better on veg oil than on mineral diesel - both in terms of fuel economy and 'pull' on hills. Such a shame the newer vehicle I drive can't cope with veg oil. The exhaust smell is very noticeable especially on a cold morning and, yes, I've actually been asked where the chip van was 'cos we can smell it but not see it'. LOL
 
m p g improvement

I must congratulate you ,you had us all guessing, I have my car tyres inflated with nitrogen, cant say it has improved my mpg though, I get 13.1 mpg same as before, its a V12 D.Double, was going to have motorhome tyres inflated with nitrogen ,but not too bothered as no positive result since having the car done.One point which you may know ,the tyres are best completly deflated of air ,then inflated with pure Nitrogen.you cant just let them down on the vehicle then re-inflate with nitrogen , they need to be as empty of air as possible. :wacko:
 
Good old confirmation bias. Must be a more virulent strain about nowadays.

It usually applies to those who have paid big money in the belief that it will bring big benefits - so of course it does - but here we have a case involving very cheap snake oil producing incredible savings.

claim a better 'ride'
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Taken for a ride perhaps
 
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Nitrogen is lighter than air so obviously using it in your tyres replacing the air makes your van lighter, resulting in more mpg of course.
I'm thinking of using Helium in my tyres even lighter than Nitrogen. Instead of weighing 5100kg it will weigh about 5099.99kg (approx). Will definitely save on fuel, I wonder how much Helium costs, and will it leach through the tyre carcase.....
Perhaps I'll stick with air.
 
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Air is 79% nitrogen already. The rest is oxygen and co2 plus traces of other stuff. The only reason to go to 100% nitrogen is to prevent the possibility of oxidation, this is why telescopes, weapon sights and aircraft tryes are nitrogen filled. Working out your mpg can only be done accurately (by amatuers) by measuring fuel in vs miles covered and even then only if tyre pressures are maintained accurately - a couple of PSI can change the rolling diameter of the tyre and skew the figures completely. I have 4 tyre pressure gauges - they all read differently.

Best thing to do with £10 is to buy a thick piece of carpet and put it under the throttle pedal.:lol-053:
 
Mastodon said:
Air is 79% nitrogen already. The rest is oxygen and co2 plus traces of other stuff. The only reason to go to 100% nitrogen is to prevent the possibility of oxidation
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Curious really, because if the reason to fill tyres with Nitrogen is to prevent oxidisation of the tyre then how does this help the exterior of the tyre which is exposed to air 100%of the time and therefore is likely to deteriorate and be the deciding factor in its demise.
How does the tyreshop customer know that his tyre has been actually filled with Nitrogen gas?
 
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