Redex Deals

Redex Deals & Offers

177 deals3,103 comments
Redex fuel clean for petrol and diesel - £2
Found 20th OctFound 20th Oct
Redex fuel clean for petrol and diesel half price at Tesco. Its that time of year to get the car in order for winter and thought it would help someone

I'll try another, Kingston Park deffo £4. Cheers.


Still £2 in my local Tesco half an hour ago, shelf label says offer runs until the end of the month.


Would reccomend millers ecomax instead of this. Lasts 10 tanks full. I occasionally use this if its on offer for £2 as it wont kill me to throw some redex in every couple of months but, millers is what i use every fill up


I usually find them half price in Tesco and Asda. Check after a month or 2. Sometimes they sell engine coolants for half price too which is good deal


£4 now.

Redex Fuel System Cleaner £2.00 Instore Wilko Slough
LocalLocalFound 13th OctFound 13th Oct
Found In Wilko Slough, for both petrol and diesel. May be national, worth a look. Redex diesel system cleaner keeps injectors cleans by breaking down and safely removing harmfu… Read more
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So agreed and there have been reports that it can actually damage your catalytic converter. It should not be used often and can damage rubber seals where they come at numerous sealing points on any diesel and petrol cars. Long term trouble that's all. If you need a decent cleaner you buy a good one that has been proven and even then it won't bee too effective.


Have any motoring shows or magazines actually tested this stuff to see if it offers any more than the additives added to modern fuels? Same with the oil additives and so called 'friction reducers' against the additives in modern engine oils. YouTube tests show exactly the same mpg before and after on long term tests. An old mechanics trick is gun cleaner to flush out the fuel system but make sure u change the fuel filter soon afterwards...


VW should bulk buy this stuff (lol) (lol) (lol)


To judge from how often this is posted on here at this price, this seems to be the usual price. Occasionally on special offer at £4


helped my car pass a previously failed MOT diesel emissions test.....heat from me..

Redex Diesel fuel System Cleaner 250ml @ Tesco Instore - £2
LocalLocalFound 6th OctFound 6th Oct
Found at Tesco New Square West Bromwich. Cheapest online is £5.50. There's also Red ex for petrol cars same price. May be national, worth a look. Redex diesel system cleaner kee… Read more

So someone who rides a bike can't drive or know anything about cars? Okay.... Interesting logic there but may explain why you could believe this could do anything. Without wishing to turn this into a religious matter, have you got any proof it does work then? Other than vagaries like "my cars feels faster, quieter, more responsive, starts better , gets additional 5mpg etc" I have tried this btw, makes sweet fa difference, other than making my a couple of quid lighter..


My dad has a van that failed it’s MOT on emissions, he put a bottle of this in & went back two days later, easily passed. That’s proof enough for me, he also said fuel economy noticeably went up too!


It does work as it's fixed the start up problems in my golf!


This stuff does work.! we used to get smoke on startup on a fiesta diesel. this stopped it.


And with you being the cyclist you would know how exactly? Got definitive proof it's snake oil?

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Redex DPF cleaner half price sale - £4 instore @ Tesco
LocalLocalFound 6th OctFound 6th Oct
Seen this on tesco Redex DPF cleaner £4 Diesel/petrol system cleaner £2
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It might aid passive dpf systems but I doubt it'll have any impact on active systems. In theory it's supposed to lower the temperature of which the soot/carbon particles burn which then makes them easier to burn off in the dpf. The best way to clean the dpf properly is to remove it, cut open and wash it out with either a jet washer or chemicals. Their is a method that you can remove the pressure sensor and put some chemical in, let it soak and then force a regeneration that would probably work. The best thing to do to help your dpf is to do some decent long runs, let the regenerations complete before switching engine off. I really would avoid this.


That cleans the injectors and the egr. Not the DPF


No decent garage would recommend that. You may well damage the engine putting petrol in.


Can you report on the results please? What vehicle?


Does this stuff really work? My local garage says to me put £2-3 petrol and rest diesel and put your foot down in 4th gear

Redex petrol and diesel system cleaners 250ml half price at Wilko, £2.00.
LocalLocalFound 11th SepFound 11th Sep
Treats two tankfuls. Thought I'd give it a go at this price.
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Any good for petrol?


This stuff really doesn't do much. I've had more success 'cleaning' the injectors and top end by running the tank down until it's on fumes (to avoid dilution) and then putting £15 of Shell V-power in. The car is a 1.8 petrol Mazda which only drives 20 miles a day.


Good luck! Feel sorry for you...


Spoken like a true 'expert' who really knows nothing. Miller's and Forte are NOT the same stuff and are nothing like each other and are definitely nothing like Redex which is a snake oil. Stick some Miller's in your diesel car and do about 100 miles for it to really kick in then come back here to comment.


Although Millers does improve the cetane numbers so you get much improved combustion, a cleaner burn and thus less emissions, better fuel consumption. Modern diesels do need driving at high revs for a few miles occasionally to clean out the exhaust by getting it red hot and thus burning any deposits.This also helps to clean the exhaust gas recirculation or EGR which causes a lot of problems in modern diesels.

Redex Adblue [10L] £10 (3 for 2) @ Tesco
Found 16th AugFound 16th Aug
3 for 2. Free C&C. If your Adblue tank is empty, your car won't start, so you need a backup plan. Keep Redex Adblue in your car or garage so that you can top up as soon as y… Read more

It is a synthetic product. It forms part of the selective catalytic reduction process of diesel exhausts, won’t be going anywhere for a long time. For most people it is a serviceable item, I needed to fill up my vans tank (around 25l) of Ad Blue every 12k miles and that is quite Ad Blue hungry.


Doent have use by date but is known to be sunlight should be kept out of direct sun light when storing.


I use it in my Peugeot 5008 diesel. I only do 5000/7000 miles a year and is included in my yearly service. So never had to fill up yet. Peugeot will fill your tank with upto 10 litres of adblue for £9.99.®? Small price to pay when my old vectra 1.9 cdti was £270.00 a year tax. The Peugeot is only £30.00


old technology , it was used many many years ago in power generating stations


Apparently adblue is some sort of solution of urea. Where that urea comes from or how it's made I haven't a clue. Just googled it as I don't know anything about adblue. Didn't even know this was a thing. Edit: apparently not from animals or humans but is man-made in a lab or factory of some sort.

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Redex petrol and diesel injector - £2 @ Tesco (online and instore)
LocalLocalFound 14th JulFound 14th Jul
250ml half price in Tesco Tottenham

Only diesel online :(


Seems to be national - seen it in Feltham Dukes Green


This stuff lets my car transform and fly into space, beat that Elon Musk!


Mine is faster than a f1 car now I use this ,at least one driven by Mr Hamilton.


Can't fault this stuff. I get 10 MPG more than I used to, 0-60 times have halved and £100 off my car insurance.

Redex Diesel Particulate Filter Cleaner 250Ml at Tesco for £4
Found 14th JulFound 14th Jul
Dpf cleaner
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People, this is for DPF not the normal diesel/petrol fuel injector/spark plugs cleaner. PS. The normal Redex is also on sale, so I'll grad some of that too. Cheers OP


Was £2 in my local Tesco. Bishop Auckland had plenty on shelf


I brought one. Wasted it trying to get it into the tank. Anyone know any tricks on a ford? Only the fuel pump Opens it.


Just paid £5.29 from Amazon a few weeks ago, so this is a good price. Heat added


Why is this getting so many colds!?

Redex Diesel and Petrol Fuel System Cleaner 250ml reduced to £2 @ Asda
Found 4th JulFound 4th Jul
Both have been reduced to £2 at Asda
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Sounds a bit of an odd thing for a garage to say. It goes in your fuel not your oil or air intake, why would it destroy a turbo??? It doesnt go through the turbo in any way so I'd say they talk (poo)


New cars - most of my personal experience is with VAG cars but it’s similar for most others - alter fuelling depending on fuel quality. Spark timing, ignition angle, injector spray duration, requested load vs actual load etc etc. are all altered among others. As I said, Audi in particular even state in the manual for many of their performance cars that power output will be lower for regular fuel and optimal for “super”. An instantly higher mpg suggests a leaner burn and can be (but not only) because of the ecu telling the engine to develop less power for the requested amount the driver and car are asking for. The ecu is monitoring this constantly, and compensates via the short term (instantaneous changes) and long term (habits of the driver and demand) fuel trims. Nothing should run rich any more as they are closed loop systems. The ecu knows the temperature of everything and the amount of everything (air/fuel/boost/request) and tweaks on the fly. Less quality fuel (e.g. contaminated by redex or whatever) will cause the ecu to back everything off and you will get an instantly better mpg. Not always admittedly but generally.


Poorer fuel will cause the ecu to burn rich, thus decreasing fuel economy. This can work to help some cars, but new and we'll maintained cars it will likely make little to no difference.


Such a long sentence


Redex Diesel System Cleaner 4pk £4.50 & Petrol available at same price @ Wilko Temporarily oos online but available in-store
Found 4th JulFound 4th Jul
Redex Diesel System Cleaner cleans your injectors to help you save fuel and extend the life of your engine, and this convenient 4 pack makes it easy to use every time you fill up.
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Bigger bottle has mark on the bottle showing the half way point. You still have to guesstimate though (annoyed)


Depends really what you want. If you want this ans just throw in every tank. Or stand there measuring out the bigger bottle (flirt)


These are available instore and can confirm they are only 90ml per bottle which is one shot. The other versions are 250ml(2shots) which are better value considering they are currently available for £2 in places such as Asda etc...


Try in-store :) They always have. Once post on here they will be soon oos keep checking and click for email update



Redex at Wilko for £2
Found 13th MayFound 13th May
Half price one bottle for 2 tanks
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I have done another trial with Redex on trip to Germany and back: one way without Redex, back to UK - with Redex. Same mileage, same driving conditions. So in 1197 miles one way without Redex and same miles back with it - no difference in consumption, same 52.8mpg. This proofs me again: Redex just another money spinner.


Its hard to tell to be honest. I reset the mpg and it jumped up to 49 but then with all this hot weather the aircon is working overtime also my driving habits change in the school holidays. I haven't noticed any difference in performance. sitting at 47 at the moment but I'm probably only driving 5 miles every couple of days as opposed to 40 a day.


One month has what are the results?


I would be very glad to hear from you after trial. Would be beneficial to others too.


That's not really a balanced argument if you haven't tried it. You have nothing to compare the cheap fuel to. I'm going to get a bottle and try it. Let you know after a month whether I'm still getting the same MPG (45.8 ATM)

Redex Fuel System Cleaner - £2 @ Wilko
LocalLocalFound 12th MayFound 12th May
Redex Diesel Fuel system Cleaner Came across on wilko Online price £2

It's available instore bought them yday from Wilko


No stock. Same price at Tesco.

Redex Diesel System Cleaner  £2 at Sutton Tesco Extra
Found 7th MayFound 7th May
Selling for £2 at Sutton Tesco Extra store. May be store-specific not sure. Usually around £5+ on eBay etc. Seems to be selling for £2 at other stores too
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shell vpower seems to improve smoothness with my 2.4 turbo diesel. I'm also convinced performance improves with my car too. not sure about redex, i though it helped with my old 1990 g reg rover, but that was a long, long time ago!


V power diesel actually has lower power potential as oil is replaced with additives It may clean but by no means should make more power


Check your handbook - chances are the manufacturer will advise against snake oil!


It would be good find out if this stuff really works. I use Forte Diesel Turbo Cleaner and it does the job just it costs way more than Redex.


I use Miller's there is...

Redex Diesel and Petrol Fuel System Cleaner 250ml reduced to £2 @ Asda
Found 4th MayFound 4th May
Both have been reduced to £2 at Asda
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Possibly has some beneficial effect on an old and semi-knackered engine but it would take more than a sample of one to prove that!


5th gear and it does work watch -


It all crap it doesn't make any difference at all!!top gear tested all the fuel additives that's supposed to work and everyone of them failed!


Tankful of premium fuel would do the job


Look at fueltone instead. much much better. Redex is like water.

Tesco - Redex petrol system cleaner £2 instore
LocalLocalFound 24th AprFound 24th Apr
Tesco Durham Redex petrol system cleaner 250ml - £2 Redex diesel system cleaner 250ml - £2 Redex DPF cleaner 250ml - £4

Rubbish stuff better off with Fueltone


Nationwide I believe. Just ordered through the grocery delivery site. In the half price offers section if the search doesn't bring it up.


They should call it pounds land as they hardly have anything good for a pound any more


Same in Poundland

Redex Petrol system cleaner 3 pack only £1 @ b&m
Found 15th AprFound 15th Apr
B&m’s further reduced this 3 pack to only £1 . Someone might still get it at their local store .

My local b&m never has Redex Petrol, only diesel. 3 Pack in Asda is £2-3.


None in Hayes as expected


Same for me, last week MOT failed on emissions. My mechanic must be slightly more honest as he said that he would just use the stuff you put in the tank, and retest it and it passed without advisory


Definitely helps! Keep it at 3rd gear and drive at 50 for around 10 minutes. Just make sure the engines warm.


Only to your wallet.

REDEX ADBLUE 5L £4.78 @ COSTCO mon 2nd April
Found 30th MarFound 30th Mar
Heads up from monday 2nd April at costco i store the have 5L of redex adblye for just £4.78 inc vat chepest other is at tesco which is 1.5l for £11.59 this is a HUGE 5L Adblue® i… Read more
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Adblue... Is adblue. Irrelevant of brand. If you are willing to pay £11.59 for 1.5l of adblue, then you are not doing enough miles to warrant driving a diesel! Most diesel cars will have an adblue tank of 15litres. So that's why I say if you are buying 1.5l to top up, you aren't doing enough miles. On my euro6 VW, I get through around 10litres every 8kmiles. So, 1.5l for me would only last 1000miles! Adblue is widely available for under £10 for 10l. If you are lucky enough to have a Scania truck service/parts nearby, then it's around £8 incl vat for 10l.

Redex Diesel System Cleaner X3 - £2 @ B&M
Found 29th MarFound 29th Mar
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There are markers on the side of the bottle. I fill a notch/marker of Redex in before filing my tank.


My local B&M doesn't sell this 😣


Doesn't matter according to the bottle. I didn't notice much of a difference tbh.


Is this to be used on a full tank? So pour this in then fill up? Or fill up tank then pour some of this in?


Read your handbook. The manufacturers will tell you NOT to put additives in your fuel. That's good enough for me!

3 bottles of Redex (Petrol or Derv) for £4 @ B&M
LocalLocalFound 10th MarFound 10th Mar
Available in-store, we worth adding to every tank fill, especially supermarket fuels at this price. Having had a fully serviced derv suffer from dirty injectors (and had a good cha… Read more

What about a dose of castor oil.....always cleared my old dad out................


yep but sticking it in your old motor 10 days before the MOT (ie emissions) is worth the investment best 50p you can spend


Buy some Miller's Ecomax and stop wasting your time


If you look at the Redex datasheet you can see this is not Generic Naphtha, but has a specific EC and CAS numbers, which if you look up shows its hydrocarbons have carbon numbers predominantly of C6 to C13. This is a bit lighter than pump petrol (which is predominantly C4 to C12), is a common carbon deposit cleaner, though if you want something more effective at cleaning you should be looking at something containing Polyether Amine (PEA), which would be good for occasional treats, but Redex is great a regular fuel treat.


exactly, mostly Naphtha a generic term for petroleum distillate. Ie distilled from Crude oil . AKA petrol.

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