Author Topic: Remnox specialist fuel additive  (Read 1550 times)

guest9236

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Remnox specialist fuel additive
« on: April 28, 2023, 03:23:06 PM »
Just had a service of my Mk 3  at my local friendly, unlike the main dealership garage
The following  additive was put into fuel tank  containing E10 petrol.
Have. Not  seen this stuff before am looking for any observations or comment’s good or bad please.
Have of course used Redex in the  distant past but. not recently


embee

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Re: Remnox specialist fuel additive
« Reply #1 on: April 28, 2023, 04:15:53 PM »
Don't know anything about it specifically, but a bit of searching shows what it contains, here https://sulnoxgroup.com/wp-content/uploads/2021/09/SulNOx-Eco-Product-Safety-Sheet.pdf

In summary it is 80-90% 2-Butoxyethanol https://en.wikipedia.org/wiki/2-Butoxyethanol , and the remainder essentially amides of various sorts, hydroxyethyl being one named.
These substances are both surfactants and emulsifiers, so basically the product is a de-watering agent.

Whether free water is a real issue in your car is debatable. Ethanol can indeed attract water, but as such it also acts as a de-watering agent in its own right to some extent. You will find various articles describing phase separation with high ethanol blend petrols, but if the vehicle is in regular use the movement and agitation in the tank will usually effectively keep any water which might be absorbed mixed with the ethanol, and thus with the petrol, and it should self-clean.
The biggest question is where can water be allowed to come into contact with the fuel? Certainly not in your tank if the cap is fitted correctly, the tank runs essentially with fuel vapour in it not air, and definitely not a steady supply of humid air.
In a rarely used fuel station storage tank it might happen, but I'd expect any such phase separation products to end up at the bottom of the tank and unlikely to get into your car. In busy petrol stations the turnover and housekeeping should minimise the risk.
The good news I suppose is that those compounds are very unlikely to cause any harm, there shouldn't be any sort of metallic elements which could potentially cause harm to catalysts etc., and in the low concentrations used there should't be any effects on rubbers etc.
« Last Edit: April 28, 2023, 04:17:48 PM by embee »

Lord Voltermore

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Re: Remnox specialist fuel additive
« Reply #2 on: April 29, 2023, 10:11:03 AM »
I cant comment on a specific product  but l think relatively cheap chemicals sold in expensive little bottles  tend to appear on the market in response to adverse  comments in the press and on forums etc  . Rougher running, fewer mpg, a hydroscopic tendency to absorb water  etc.  Some of the hype may  be true to some extent, and some cars may be worse affected than others. But such comments also boost the sale of boosters  and I am cynical about the origins and scientific basis of some of the comments.  And they tend to self perpetuate.
When lead free petrol was introduced   some cars needed a lead substitute (or hardened  valve seats) but I am less convinced about an additive for those cars  that technically should be fully compatible with E10.

You could try a bottle to see if the car really does  run better on E10  with additive versus untreated E10 and  also against E5 or ethanol free.If available.    Then compare the overall cost per mile of each option.  You cant test the water aspect    but is it really such a problem? 
  Trust a dog to guard your house  , but not your sandwich

Jocko

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Re: Remnox specialist fuel additive
« Reply #3 on: April 29, 2023, 11:32:51 AM »
RemNOx Diesel treatment (actually SulNOx, marketed in the UK as RemNOx), is designed for use in boats, where water in the fuel is a problem. They add about a litre to every 400 - 450 gallons of diesel.
I think RemNOx petrol treatment is just a bit of jumping on the E10/water bandwagon.

guest9236

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Re: Remnox specialist fuel additive
« Reply #4 on: April 30, 2023, 02:55:40 PM »
I cant comment on a specific product  but l think relatively cheap chemicals sold in expensive little bottles  tend to appear on the market in response to adverse  comments in the press and on forums etc  . Rougher running, fewer mpg, a hydroscopic tendency to absorb water  etc.  Some of the hype may  be true to some extent, and some cars may be worse affected than others. But such comments also boost the sale of boosters  and I am cynical about the origins and scientific basis of some of the comments.  And they tend to self perpetuate.
When lead free petrol was introduced   some cars needed a lead substitute (or hardened  valve seats) but I am less convinced about an additive for those cars  that technically should be fully compatible with E10.

You could try a bottle to see if the car really does  run better on E10  with additive versus untreated E10 and  also against E5 or ethanol free.If available.    Then compare the overall cost per mile of each option.  You cant test the water aspect    but is it really such a problem?

This was not a problem  to me  merely a question .
I had never heard of before but after car serviced I noticed it on the  service sheet etc
And. Not  being  particularly Au fait  with the  description I enquired from the forum members,
 who I am   very firmly convinced would know  what it is or was or for what it  is supposed to do.
But I do now and thank you and   embee and Jocko for the enlightenment.
Having since driven the car I’m not convinced of  any improvements in performance so It will not be added nxt time it is serviced
I do tend to alternate  on  filing up to use E5 /E10  not sure if that is necessary or not but again any expert advice regarding  this   Would be again appreciated.
Thank you all for your time.

Downsizer

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Re: Remnox specialist fuel additive
« Reply #5 on: April 30, 2023, 09:48:44 PM »
I’ve never used anything other than 95/E10, usually from ASDA, and had no problems. 6 year average real fuel consumption is 52mpg over 60,000 miles.

madasafish

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Re: Remnox specialist fuel additive
« Reply #6 on: May 01, 2023, 09:13:57 AM »
After some 50 plus years of motoring, my experience of additives which claim performance/fuel consumption  improvements is that they reliably fail to deliver any,time after time after time

Redstart

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Re: Remnox specialist fuel additive
« Reply #7 on: June 03, 2023, 12:04:03 PM »
I have put in E5 in my last few tanks. Costco 97 Octane mainly. Also some Shell and Tesco 99 Octane, coupled with 0w20 oil change, I'm averaging 64 on runs into Derbyshire and 60 to work and back. 9 miles A roads. Car is 68 with 50000 yesterday.  Staying with E5. I put some E10 from Sainsbury in last year, christ !! Dropped 5mpg almost instantly!!

guest9236

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Re: Remnox specialist fuel additive
« Reply #8 on: June 03, 2023, 01:47:30 PM »
I have put in E5 in my last few tanks. Costco 97 Octane mainly. Also some Shell and Tesco 99 Octane, coupled with 0w20 oil change, I'm averaging 64 on runs into Derbyshire and 60 to work and back. 9 miles A roads. Car is 68 with 50000 yesterday.  Staying with E5. I put some E10 from Sainsbury in last year, christ !! Dropped 5mpg almost instantly!!

Interesting information thank you confirmation of E10 etc.
I have also tried Sainsbury’s E10  and also found that MPG  dropped perceptibly so I am now on the E5  getting similar mpg as yourself
Solution confirmed

Redstart

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Re: Remnox specialist fuel additive
« Reply #9 on: June 03, 2023, 07:29:35 PM »
There's a short hill on the way home from work. 8%/1 in12 at maximum.  E5 I can do it in 4th. E10 3rd. (Approx 2 miles from engine start) Not scientific, but always happens when I try it.

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