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Redex Petrol Fuel System Cleaner 250ml £2 (Prime) + £4.49 (non Prime) at Amazon
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Redex Petrol Fuel System Cleaner 250ml £2 (Prime) + £4.49 (non Prime) at Amazon

Expert (Beta)32
Expert (Beta)
Posted 17th May
  • Redex RDX10 Petrol Injector Fuel System Cleaner
  • Redex
  • Assembly Parts
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guildfordhighstreet17/05/2020 07:39

Waste of time. Just stick to a reputable brand of petrol instead of the …Waste of time. Just stick to a reputable brand of petrol instead of the cheap and nasty supermarket petrol, and you won't need this.


I like how you call this a waste of time but have an issue with supermarket fuel of which there is always a discussion of the fact the base fuel all comes from the same place but all have different additives.
guildfordhighstreet17/05/2020 07:39

Waste of time. Just stick to a reputable brand of petrol instead of the …Waste of time. Just stick to a reputable brand of petrol instead of the cheap and nasty supermarket petrol, and you won't need this.


I live near the port and all the petrol companies including supermarkets fill their tankers from the same bulk tank. I'm afraid low quality petrol at supermarkets is a myth
guildfordhighstreet17/05/2020 07:39

Waste of time. Just stick to a reputable brand of petrol instead of the …Waste of time. Just stick to a reputable brand of petrol instead of the cheap and nasty supermarket petrol, and you won't need this.


I only fill up with shell v-power. Still needed a bottle of this and cataclean to get car through last MOT test.
32 Comments
Thx DD
Waste of time. Just stick to a reputable brand of petrol instead of the cheap and nasty supermarket petrol, and you won't need this.
Edited by: "guildfordhighstreet" 17th May
guildfordhighstreet17/05/2020 07:39

Waste of time. Just stick to a reputable brand instead of the cheap and …Waste of time. Just stick to a reputable brand instead of the cheap and nasty supermarket petrol.


guildfordhighstreet17/05/2020 07:39

Waste of time. Just stick to a reputable brand of petrol instead of the …Waste of time. Just stick to a reputable brand of petrol instead of the cheap and nasty supermarket petrol, and you won't need this.


I only fill up with shell v-power. Still needed a bottle of this and cataclean to get car through last MOT test.
guildfordhighstreet17/05/2020 07:39

Waste of time. Just stick to a reputable brand of petrol instead of the …Waste of time. Just stick to a reputable brand of petrol instead of the cheap and nasty supermarket petrol, and you won't need this.


I like how you call this a waste of time but have an issue with supermarket fuel of which there is always a discussion of the fact the base fuel all comes from the same place but all have different additives.
Niz17/05/2020 08:38

I like how you call this a waste of time but have an issue with …I like how you call this a waste of time but have an issue with supermarket fuel of which there is always a discussion of the fact the base fuel all comes from the same place but all have different additives.


That's correct to a point. Shell V-Power is a semi-sythetic GTL (Gas To Liquid) fuel developed in conjunction with Farrari F1 team. The fuel we buy at the pump is 99% the same as the F1 use. It has 25% more additives in and rated at 99RON.

I've use a lot of fuel additives (Including Redex) in the past, the only ones I can say that worked for me was BK44 for petrol vehicles and BG244 for diesel and the Archoil products! But these are way more expensive that Redex and have a lot more PAE packed into them...
Edited by: "TokyoGhoul" 17th May
Are these completely safe in petrol cars , I have a honda civic and mx5 which Im considering putting this in but dont want to bodge it up
Ouzoherb17/05/2020 09:08

Are these completely safe in petrol cars , I have a honda civic and mx5 …Are these completely safe in petrol cars , I have a honda civic and mx5 which Im considering putting this in but dont want to bodge it up


Go fill them up with a few tank fulls of V-Power fuels to start off with. You might see a good difference and not need to use other products. I've use Redex in all my vehicles over 30 years without any problems. Just don't use anything with PTFE in...
It's 99.9% bulking agent. There are better additives out there if you insist but in most cases it isn't necessary.

Shell V-Power won't make your car perform any better but may help clear a few deposits, Probably not worth it in the long run. Unless it's a Japanese sports car. They need higher octane fuel in general to prevent pinging etc..

You really shouldn't need to use additives, If your check engine light is on then maybe some additives might help temporarily fix an impending fault, worn, faulty sensor etc... It's a good idea to thrash your car occasionally, clear some cobwebs, get the catalyst nice and hot etc as it'll work far more efficiently. In fact tip of the day. Before taking your car to be mot'd thrash it and it will have a much better chance of passing.

You want to clean your injectors then you're better off removing them and cleaning them in an ultrasonic cleaner, far better results.
guildfordhighstreet17/05/2020 07:39

Waste of time. Just stick to a reputable brand of petrol instead of the …Waste of time. Just stick to a reputable brand of petrol instead of the cheap and nasty supermarket petrol, and you won't need this.


I live near the port and all the petrol companies including supermarkets fill their tankers from the same bulk tank. I'm afraid low quality petrol at supermarkets is a myth
GLENHESKETH17/05/2020 10:38

I live near the port and all the petrol companies including supermarkets …I live near the port and all the petrol companies including supermarkets fill their tankers from the same bulk tank. I'm afraid low quality petrol at supermarkets is a myth


It's just the additive package they mix in with it that makes the difference.
Mattwood117/05/2020 08:18

I only fill up with shell v-power. Still needed a bottle of this and …I only fill up with shell v-power. Still needed a bottle of this and cataclean to get car through last MOT test.


So v-power was a waste of money then!
Snake oil.....yay got in there first..
guildfordhighstreet17/05/2020 07:39

Waste of time. Just stick to a reputable brand of petrol instead of the …Waste of time. Just stick to a reputable brand of petrol instead of the cheap and nasty supermarket petrol, and you won't need this.


.....but decent fuel costs £1.15 a litre and Tesco fuel costs 99 pence a litre.
I voted HOT as I saw this on offer a few weeks ago @ £2 so decided to run my car to empty and one bottle which is actually a double dose into a full tank of fuel on car which has done 120,000 miles. I think it has used less fuel but maybe placebo but the same could be said for V Power from Shell that costs 30 pence a litre more than regular fuel so better value.
Edited by: "colombo" 17th May
Same price in Tesco
Mattwood117/05/2020 08:18

I only fill up with shell v-power. Still needed a bottle of this and …I only fill up with shell v-power. Still needed a bottle of this and cataclean to get car through last MOT test.


I'm surprised you sleep after all those goodies....😁
colombo17/05/2020 11:52

I voted HOT as I saw this on offer a few weeks ago @ £2 so decided to run …I voted HOT as I saw this on offer a few weeks ago @ £2 so decided to run my car to empty and one bottle which is actually a double dose into a full tank of fuel on car which has done 120,000 miles. I think it has used less fuel but maybe placebo but the same could be said for V Power from Shell that costs 30 pence a litre more than regular fuel so better value.


More likely the better weather, cheaper fuel and the clearer roads etc..
Also £2 at tesco for both petrol and diesel versions
would you add this to a brand new car (registered March 2020)?
Nuggy9617/05/2020 15:25

would you add this to a brand new car (registered March 2020)?


Most certainly not, It would never increase performance, Only potentially restore some etc..
.MUFC.17/05/2020 16:15

Most certainly not, It would never increase performance, Only potentially …Most certainly not, It would never increase performance, Only potentially restore some etc..


When would you recommend after like 9-12months?
Nuggy9617/05/2020 16:19

When would you recommend after like 9-12months?


10 year old maybe.
colombo17/05/2020 11:52

I voted HOT as I saw this on offer a few weeks ago @ £2 so decided to run …I voted HOT as I saw this on offer a few weeks ago @ £2 so decided to run my car to empty and one bottle which is actually a double dose into a full tank of fuel on car which has done 120,000 miles. I think it has used less fuel but maybe placebo but the same could be said for V Power from Shell that costs 30 pence a litre more than regular fuel so better value.


I say it on almost all posts about Redex; even if it's a placebo effect, then £2 is really cheap to make yourself feel better about your car.
.MUFC.17/05/2020 09:45

It's 99.9% bulking agent. There are better additives out there if you …It's 99.9% bulking agent. There are better additives out there if you insist but in most cases it isn't necessary. Shell V-Power won't make your car perform any better but may help clear a few deposits, Probably not worth it in the long run. Unless it's a Japanese sports car. They need higher octane fuel in general to prevent pinging etc.. You really shouldn't need to use additives, If your check engine light is on then maybe some additives might help temporarily fix an impending fault, worn, faulty sensor etc... It's a good idea to thrash your car occasionally, clear some cobwebs, get the catalyst nice and hot etc as it'll work far more efficiently. In fact tip of the day. Before taking your car to be mot'd thrash it and it will have a much better chance of passing.You want to clean your injectors then you're better off removing them and cleaning them in an ultrasonic cleaner, far better results.



Isn't a bath that cleans the inner injector going to be costing a bit more than £2 ?
Will it make a difference (saving) to my 2007 Golf TDI if I invest the time and money ?
It runs OK (avg 50 mpg tank on tank) just now,
I do add Redex (Diesel) when I remember half a dozen tmes a year, to a full tank and run till empty (nearly).
H-otter17/05/2020 17:04

Isn't a bath that cleans the inner injector going to be costing a bit more …Isn't a bath that cleans the inner injector going to be costing a bit more than £2 ?Will it make a difference (saving) to my 2007 Golf TDI if I invest the time and money ?It runs OK (avg 50 mpg tank on tank) just now, I do add Redex (Diesel) when I remember half a dozen tmes a year, to a full tank and run till empty (nearly).


Yes off course, however you can use them for other purposes, cleaning other parts etc.

There are some better additives for diesels, Apparently Seafoam seems to have good results, Here's a video

and if you want to boost your cetane level then you'd be better using 2 Ethyl Hexyl Nitrate

There is some science behind it

"Advantages[edit]By reducing ignition time, Cetane Improver additives affect engine emissions,[10] and guarantee:[11]

  • Lower fuel consumption: as the fuel takes longer to burn completely, less fuel needs to be injected for the same performance
  • Quicker start-up with less smoke: easier and faster combustion affects smoke emissions, especially on the long term
  • Better cold start: fuel ignites more easily
  • Less engine knock and noise: as the fuel is quick to ignite, it also burns longer, which allows the pressure to rise more smoothly in the chamber
  • Wear reduction: better combustion leads to minimum deposits and lower engine wear".

I've tried it, not really noticed any difference etc.. but you can be sure it's better than Redex, Redex for diesel contains a very small amount of 2 Ethyl Hexyl Nitrate.

One bottle treats 10 - 20 tanks of fuel.
Edited by: ".MUFC." 17th May
That's helpful
But if it costs more (?), I would like to "notice a difference" , other than the extra cost
I was just going to get it remapped and see how many more miles it lasts on top of the 135K it has done just now !
"Less smoke" ?
That might help, as they arre calling me an Indian driver round here, cause of all the smoke signals from mine
I'm sure it's always been this price, I don't think this is any different. However the usual price at a supermarket is £4 so I guess it's a reminder of it's difference in price
H-otter17/05/2020 17:43

That's helpful But if it costs more (?), I would like to "notice a …That's helpful But if it costs more (?), I would like to "notice a difference" , other than the extra cost I was just going to get it remapped and see how many more miles it lasts on top of the 135K it has done just now !"Less smoke" ?That might help, as they arre calling me an Indian driver round here, cause of all the smoke signals from mine



Remapping is a good way to squeeze some more miles out of it but it may not be good for a worn clutch etc.

I had a Ford Galaxy 1.9Tdi ( VW PD engine) and got an extra 5-10mpg out of it after remapping and it was smoother etc.

Use a tank of premium grade diesel occasionally, Similar price and similar additives.
Edited by: ".MUFC." 17th May
Nuggy9617/05/2020 15:25

would you add this to a brand new car (registered March 2020)?


Wouldn't add it to any car regardless of age or mileage!
I had a brand new diesel engine fitted to a Toyota costing 6k. It had a brand new ERG valve fitted. I ran it for 3k on normal (Not supermarket fuel) and removed the EGR valve to see what condition it was it. It was covered in a baked on, hard to remove black carbon that took ages to Manuel clean.

I fitted a brand new EGR valve and only used Shell V-Power diesel for another 3k and removed that. The valve was covered in a velvet like black coating that literally brushed off without any effort.

If you use a premium product, you ensure that your engine is getting the best fuel it can use. It will keep the whole of your fuel, combustion system in tip top order! So no real need to use any additives! Unless there is an underlying issue.

Give your car -(Especially diesel) a good motorway run or an Italian tune up on a big hill to blow out all the crap from the exhaust and Cat.

Google a search on fuel additives and you'll see which ones can work and the ones that are Snake Oil's 🐍
Edited by: "TokyoGhoul" 17th May
guildfordhighstreet17/05/2020 07:39

Waste of time. Just stick to a reputable brand of petrol instead of the …Waste of time. Just stick to a reputable brand of petrol instead of the cheap and nasty supermarket petrol, and you won't need this.


Literally no one has ever provided hard evidence to back up the idea that "reputable" brands are better.
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