Redex Deals

Redex Deals & Offers

207 deals3,693 comments
Redex Petrol System Cleaner 4 pack for £2 @ Wilko (c&c £2)
Posted 19th SepPosted 19th Sep
Lowest price around I think. :) The Redex Petrol Injector Cleaner removes harmful deposits that build up in the fuel system, leading to fuel savings and reduced emissions. Red… Read more
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In store too, scanning £2.00 each


Probably worth pointing out you are pointing to the diesel variant and the deal is for the petrol variant. Also while you point is valid you could bulk buy lots to make your own cost effective version. These are one shot bottles you can keep in the boot and use at fill up every three months and dispose of the bottle in the bin at the petrol station. All with no fuss.


Here you go


Got any links for ebay?


Is this suitable for electric cars?

Redex Diesel System Cleaner at Asda for £2
Posted 8th SepPosted 8th Sep
Redex is the number 1 market leader in UK fuel additives and has been helping cars to drive further since the 1920s. Adding Redex Diesel System Cleaner to your tank regularly can h… Read more

When you get the diesel version yes. Two different colours available, black diesel, red petrol.


Always wait for it to go down to this price when I want it.


Normally sceptical on this sort of thing but having bought an old diesel cooper I noticed it had an annoying flat spot around 1200rpm. A bottle of this and it was sorted. It was also clearly knocking out soot as the boot was covered and the exhaust was black. Ran some DPF cleaner through and did some longer runs and that has also completely stopped, passed MOT no advisories.


As i said before, without Redex my car would never have been able to pass the MOT emissions test after it had failed it There is no higher standard of proof for me than that.


Conspiracy theories and very low standards for proof. Here's hoping you're never a juror in an important case. (y)

Redex Diesel System Cleaner 4 pack £4 (£2 Click & Collect) @ Wilko
Posted 7th SepPosted 7th Sep
Normally £8.50 currently £4 - petrol version also on offer.

Try it and see! and it definitely improves mpg and power by raising the Cetane points. I'm also aware it's basically 2(EHN) but it's supposed to also contain cleaning additives according to reviews.


This magic ingredient is called 2-Ethyl Hexyl Nitrate and you can buy it on eBay 20X cheaper than Millers. It does increase cetane level for sure, but in real life makes no difference in fuel economy or power to engine.


You've obviously never used Millers after making that comment, buy some try it for a month and then re comment here! I owned a driving school for 25 years and the difference millers made in the diesel cars was even noticed by the learners, If I stopped using it for a few weeks the engines became more noisy and not as smooth. Millers works by not only cleaning the fuel system but it also increases the Cetane number of the diesel so it burns more efficiently making the engine smoother. It also makes the fuel tank stink like the Ultimate/ V power diesel fuels so I imagine BP / Shell must use something similar. When you first start using it you notice absolutely no difference but after maybe 250 plus miles it becomes really noticeable. As I said above this only applies to the Millers 'diesel' additive, the petrol version made no difference.


Millers, Redex, BG245 - all the same snake oil. Poor people who believes this comercial trick...


It's actually very good and really works unlike this Redex. If your diesel engine is really clogged up or maybe failed the mot on emissions or smoke buy some Forte diesel additive from ebay and follow the instructions and then for preventative maintenance use Millers every fill up. The millers is that good you will notice the difference in engine smoothness within 250 miles of first using it. I also tried the Millers for petrol engines but found it made little or no difference but can definitely recommend the diesel version.

Redex diesel system cleaner twin pack - £2.50 @ Asda
Posted 24th AugPosted 24th AugLocalLocal
Found in local Asda store (Shaw) with red sticker so most probably local store only deal. I know it’s not as cheap as the £4 for 4 offer a few months back from wilko

If you have an old old diesel car ie before 2007il ish yes these kinda work. Newer cars, don't bother.


At risk of repeating what someone else has said a zillion times watch 5th gear


Cheap for snake oil. All these people mis sold diesels with dpf for town use not told city driving clogs them up with soot as they don't get hot enough to regenerate properly,good blast up the local motorway or A road every few weeks soon sorts them out and saves mucho dinero for a garage forced regeneration.......... if it's not too late.


This, or Wurth additives which are excellent.


They do work - they clean your wallet ;)

Redex Car additive 4 shot bottle + 1 shot bottle free  (£1 a shot) - £5 at Halfords
-35° Expired
Posted 13th AugPosted 13th Aug
For any car user out there Halfords currently have an awesome offer on for Redex. It's a car additive that cleans the inside of the engine creating a better running and more econo… Read more
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Jeez I'm old enough to remember when they had forecourt attendants at the garage...and you could have one shot of FedEx for each gallon of juice. And all for the princely sum of 1p per gallon. As Bob said "the times they are a changing" ;)


Cold deal...


Ok.. some seem to be missing the point. It's £1 for one shot... There will be other deals out there I'm sure. But I can only bring what I saw/know. If there are better.. brilliant.


£2 in Morrisons


twin pack £4 at Asda

Redex petrol, diesel fuel system cleaner £2 @ Morrisons
298° Expired
Posted 4th AugPosted 4th Aug
Petrol and diesel fuel system cleaner £2 Also redex diesel particulate filter cleaner half price at £4 Available in store On offer until 27/08/19
Avatardeleted2219540Get dealGet deal

I checked at the petrol station a week or so ago and the price had been changed, £2. Heat OP!


Was showing £4 on the price tag but scanned at £2 when I bought it. So I did a little experiment of my own with this and got some interesting results. Dropped my friend off at Doncaster/Sheffield airport around two weeks ago, which is roughly a 240 round trip and picked them up this Saturday. First trip had a full bottle of Redex and none on the second with car reporting just over 56mpg for the first trip and return leg barely over 52mpg. Almost too good to be true and both journeys were on the same road (mostly A1) with similar speeds although first journey did have probably around 15-20 miles at 50mph restriction and it was a much warmer day. Also didn't look like anyone in the car put any considerable holiday weight on :D Car is an old 2005 Honda Jazz with over 100k on the clock so probably appreciated a little something, I'm not even sure if this had the fuel filter ever replaced or when the spark plugs were done last.


Personally i find; For Petrol: 1 tank of "Tesco momentum 99" or "Shell v-power" seems to have a more noticeable effect than Redex ...even after that 1 tank has gone and you're back on regular petrol. For Diesel: I find adding 5-10% unleaded into the tank makes them run better (Turbo comes on stronger and more easily). So if you have a 55 litre tank add 5 litres petrol and brim the rest with diesel, then you know it's just under 10% petrol. I should add that this won't harm a diesel engine and is actually done in colder countries to stop the diesel solidifying (it's included in some manufacturer's handbooks).


£4 at my local Morrison's garage, don't keep it in (super) store? Not national then? It shows as on offer on their website...


And I respect your opinion but I was talking about modern cars. I believe also filling an older car up with premium fuel also does the same trick though! I do believe it does help with older cars from what I have read but not having experience of older cars like Ford Escorts etc anymore I cannot say so I would not offer an opinion I try and talk about what I know and have experienced and as you have experience with older cars then I respect that! (y)

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10L Redex Adblue - £9.99 @ Toolstation
-37° Expired
Posted 18th JulPosted 18th Jul
Seems like a reasonable price to me
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Synthetic urea is created from synthetic ammonia and carbon dioxide and can be produced as a liquid or a solid. The process of dehydrating ammonium carbamate ;)


@NormanStanleyFletcher Absolutely correct. It's not pigg p!ss ... (y)


It is not made from Urine - that is an urban myth. It is actually synthetic chemical Urea made in a factory.


cow urine



Redex Petrol Fuel System Cleaner 250ml £2 @ Amazon add on item
273° Expired
Posted 12th JulPosted 12th Jul
Redex Petrol Fuel Additives For a better drive Using Redex is a simple part of a car maintenance routine which can keep your injectors working better and extend the life of your ca… Read more
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Asda Cardiff (By blues football ground) had both the petrol and diesel ones for £2 the other day. Yes they do work. Better still is BG244 for diesel cars and BG44K for petrol.


Four year old diesel engine (48000 miles) had a flat spot on acceleration. Put in half a bottle of Redex, flat spot gone. Sceptical before, converted after.


It may help restore a little power, not increase it. Pointless using on a newish engine.


Online Wilko shows £4.00. It must be local.


£2 in Wilko Yes, in my 12 year old car i have noticed smoother accelatertion and better performance in mpg

Redex Petrol Injector Fuel System - £2 @ Asda
303° Expired
Posted 15th JunPosted 15th Jun
Seen these in store today, got 20 of them. Now realised they are also same price online.

Not sure what you are now stating. My comment was specifically about your comment about cheap low quality fuel! "On some high end cars, cheap low quality fuel can actually cause misfires, and need their tanks drained". All fuel on sale, as I was stating, comes from same refineries, so not sure where people in the UK are buying this cheap low quality fuel.


It will say it inside your owners manual and behind your fuel cap. Not every 98 octane tuned car will misfire running 95 octane, but I do know that some super cars do not tolerate it well at all. For instance, I know one customer who only ever used 95 octane Sainburys fuel in his 911, and claims it ran perfectly. In fairness he never drove it hard, and never ran high RPMs as he's an elderly chap. But It's the same people who argue blindly that tyres are tyres and they're all the same. Well, if you're driving back and forth to the local shops then I guess it doesn't matter what tyres, fuel, oil, parts you use etc as you probably won't notice any difference whatsoever.


I said cars specifically stating '98 octane' not 95. Where did I say that using 95 octane in a car specified for 95 octane causes misfires? I didn't. Believe it or not, many high end motors are tuned to use minimum 98 octane Super Unleaded. I also said Tesco Ultimate fuel is as good as V-Power or Texaco with additives - thus actually agreeing with your comment (fierce)


Quite agree, older classics may benefit but Euro 6 wouldn't, unless you have a link to prove me wrong on the BMW or Aston Martin website. I do value your opinion though. Sonos/Joseph Joseph owner? My new drive is only on 1200 miles, so still running in, the manual says don't use sport+ or kickdown until 1500 miles, I haven't noticed any misfires yet due to using Morrisons petrol. You do know that this was developed to clean carburetors but the marketing changed to "cleaning the injectors" with no change of formula?


Many modern petrol car engines simply don’t need their fuel system cleaned even after they’ve covered quite a high mileage. That doesn’t mean Redex is snake oil, it just means it isn’t needed in many cases. Much the same can be said of premium petrol. Many engines don’t need either cleaning additives or a higher octane fuel. There are exceptions though, so if you try either Redex or premium fuel and find it makes a noticeable difference, then you have your answer. Diesel engines are a whole different story.

Redex 4 pack petrol & diesel almost £1 each @ Wilko
286° Expired
Posted 22nd MayPosted 22nd MayLocalLocal
Redex 4 pack petrol & diesel almost £1 each @ Wilko
£4.50£8.5047%Wilko Deals
Redex 4 pack 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… Read more

Thanks for the recommendation. Where can I get some of this Snake Oil? Sorry if I have misunderstood your detailed and reasoned argument against Redex


Unless you believe chemistry and the combustion engine to be voodoo, it isn't snake oil, just science. There's a 5th gear report on it on youtube somewhere if you care.


£4.50/ 4 is MORE than £1 for one!


No, with those you're better off turning it over and roughing up the little brushes that go on the track.


(y) Asda and tesco sometimes do the 2 shot for £2 so £4.00 for the 4 shots

Redex Adblue 4L £3.25 @ Tesco
205° Expired
Posted 20th MayPosted 20th May
Redex Adblue 4L £3.25 @ Tesco
£3.25£6.5050%Tesco Deals
Redex Adblue 4L at Tesco half price.
Redex Diesel and Petrol System Cleaner, £2 Tesco
302° Expired
Posted 9th MayPosted 9th MayLocalLocal
Redex Diesel and Petrol System Cleaner, £2 Tesco
£2£450%Tesco Deals
Redex is the number 1 market leader in UK fuel additives and has been helping cars to drive further since the 1920s. Adding Redex Diesel System Cleaner to your tank regularly can h… Read more

After seeing a deal on here years ago. I gave it a try in a 2003 1.5tdCi clio. My wife used to average 80 mpg in it but I averaged around 60 mpg. I found that sticking a botlle in would take it up to 65 then tailed down to 60 again after a few tanks without. The majority was M5 quiet area and I sat in the fast lane at 85 most of the time 80 minutes a day. The saving was negligable as 5mpg was about £1.80. I used it in a 2007 Freelander 2 which gave better results taking 11mpg off but in a 2016 Hyundai Tucson there was only 3mpg improvement. So my conclusion is that it will save you money on an older car. I've commented on these deals before and on supermarket fuels vs independents, from my testing independents have the additives already and give you a few more mpg so adding this wouldn't help but if you only buy supermarket juice then give this a shot every now and then


Is that 5% better MPG for one full tank when you use Redex or over several fill ups? If it just for one tank then you may as well use the money spent on Redex to just buy another couple of litres of fuel.


They are 1 shot bottles. The clear ones in the OP are 2 shot bottles. They are more convenient so the 12.5p per bottle premium might be worth it for some.


£4.50 for 4 bottles ATM at Wilko


Fab, thanks, will pick some up later then 8)

Redex Diesel System Cleaner 4 Pack - £4.50 @ Wilko (Free C&C)
625° Expired
Posted 28th AprPosted 28th Apr
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. … Read more

Did any one else order this? I ordered the petrol version, but having picked up from my local store today I've only been sent a single bottle not the 4 pack stated (mad)


I've just bought 1L of the 2 Ethylhexyl Nitrate from ebay to give it a try. Interestingly the supplier (Hydra) has just put the price up 50p (4.2%) - on both ebay and Amazon - must have got quite a few sales from the mention on here! 1L is going to do me 20 tank fills so should last a while.


Thanks :)


Hydra is 99% pure so no kerosene


juist got some of these today from my local Wilko, so not sure why this is expired.. though i have one my my old ones too. the new ones in this 4 pack are 90ml each, the old Redex i had was 250ml in size.. thats quite a difference!

Half Price Redex Adblue 4L - £3.25  (From 25/04 ) @ Tesco
215° Expired
Posted 24th AprPosted 24th Apr
Half Price Redex Adblue 4L - £3.25 (From 25/04 ) @ Tesco
£3.25£6.5050%Tesco Deals
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 your tank's running low.

Finally a Redex product which actually works.

HALF PRICE Redex 250ml Petrol or diesel Injector Fuel System Cleaner £2 @ Wilko
231° Expired
Posted 18th AprPosted 18th Apr
HALF PRICE Redex 250ml Petrol or diesel Injector Fuel System Cleaner £2 @ Wilko
£2£450%Wilko Deals
Redex 250ml Petrol or diesel Injector Fuel System Cleaner @ Wilko
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This stuff is delicious does nothing for my car but hits the thirst spot on a lovely hot day.


Mix some petrol in with your diesel and it will clean your injectors a lot better than this stuff.


The manufacturers are remarkably coy about providing hard facts to support the claims about this product. This is regularly posted here at this price. The general view seems to be that - *if* you have an older vehicle and - *if* it is mainly used on duty cycles where the engine doesn't warm up fully (ie mostly shorter journeys) then this stuff *may* be beneficial every few months.


Many people will attest that their car runs better with this in the tank, what would the likes of Shell and ESSO know about making petrol thats good for your car? If magic beans were available I'm sure there would by many buyers in these days of social media celebrity endorsement.......


Pointless to buy then?

Redex 250ml Petrol Injector & Diesel Fuel System Cleaner £2 @ Wilko
366° Expired
Posted 30th MarPosted 30th MarLocalLocal
Redex 250ml Petrol Injector & Diesel Fuel System Cleaner £2 @ Wilko
£2£450%Wilko Deals
Diesel fuel system cleaner link Both petrol injector and diesel fuel system cleaner reduced from £4 to £2 at Wil… Read more

Want something that works? I was recommended the following by someone who exclusively works on engines, apparently taxi drivers swear by it and it cleaned the head of my 4AF nicely which had over 200k on it:


Higher octane fuel will increase power and miles/ gallon in a car which can detect knock and advance ignition timing accordingly :{


Nope it won't. By all means Google it and find out for yourself.


But surely the premium is of higher octane and you get performance hence more miles per litre


As others have suggested this is the equivalent to filling up with super unleaded or the super diesel equivalent. BUT this is a much cheaper alternative as a full tank of this premium fuel will set you back £5.50 on an average 55 litre fuel tank, as premium is approx 10p per litre more expensive. This costs £2 and is half a bottle per full tank, so effectively £1 as opposed to £5.50. A no brainer for me. I love all these self proclaimed experts claiming it's snake oil or a facade. What redex actually does is boost you fuel to give it additives to make your fuel super unleaded/diesel, but at a much cheaper cost. So you can buy supermarket fuel which doesn't have all the fuel additives, add this save money and get premium fuel.

Holts 400ml Tyreweld Puncture Repair £3.50 @ Wilko (Free C&C / also Redex 250ml £2)
261° Expired
Posted 27th MarPosted 27th Mar
Holts 400ml Tyreweld Puncture Repair £3.50 @ Wilko (Free C&C / also Redex 250ml £2)
£3.50£750%Wilko Deals
Puncture repair on offer for low price. No tools or jack needed Safe non-toxic formula Washes out of tyres easily after use Tyreweld is a puncture repair which contains a … Read more
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You are one unlucky person...


I've also used this once, it worked but I couldn't find a tyre place that was willing to repair the puncture. They told me the same story as you got but in reality I think they just couldn't be bothered to clean off the goo from inside the tyre and would rather sell me a new one. As a result I would now only use this on tyres that don't have much legal tread left, ones that I wouldn't get repaired anyway.


I normally try an just inflate and limp to garage if sustains enough pressure. I have only used this once and whilst it says on the can that its water based and online further states it should mean the tyre can repaired. However, my tyresmith refuses to repair if this is used and says it doesn't allow their repair to seal to the tyre. Anyone else have similar?


You surely bed the Jack to rotate the tyre and ensure the puncture is at the bottom, no?


If using the jack means the tyre isnt going to get ruined by running in on the rim, whilst hoping it will reinflate correctly; I will take the jack every time.

Redex Petrol/Diesel Treatments Buy One Get One  £4.99at Halfords
-185° Expired
Posted 8th MarPosted 8th Mar
Redex Petrol/Diesel Treatments Buy One Get One £4.99at Halfords
£4.99£9.9850%Halfords Deals
Redex Petrol Injector CleanerThe Redex Petrol Injector Cleaner removes harmful deposits that build up in the fuel system, leading to fuel savings and reduced emissions. Redex Pe… Read more

Only actual effect i've heard about this is its effect on emissions. Apparently "mates" mechanics will use it to pass MOT by filling the tank with it before testing.


Waste of money unless you are decoking a petrol lawn mower or car and in this day and age I doubt anyone aged under 25 knows what decoking even means. This will do nothing for your modern fuel injected car.


£2 pound in poundland


4 for £9.98 using this, if you use it.


I think it works if you drive an old diesel that you fill with crappy supermarket fuel constantly but seems pointless with newer cars especially if they are filled with better BP/Esso etc stuff. The fuel economy bit is arguable but likely lowers emissions but doubtful anyone who drives an old smokey diesel really gives a toss about emissions (lol)

Redex Diesel Particulate Filter Cleaner 250Ml Was £8.00 Then £4.00 Now £1.00 Instore Tesco (Laindon)
333° Expired
Posted 7th MarPosted 7th MarLocalLocal
Redex Diesel Particulate Filter Cleaner 250Ml Was £8.00 Then £4.00 Now £1.00 Instore Tesco (Laindon)
£1£888%Tesco Deals
- Redex DPF Cleaner lowers the temperature the soot burns at, meaning it burns away during normal driving without you having to get your engine very hot. - Cleans and reactivates D… Read more
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Only cz Volvo engines are robust!


The manufacturer I used to work for Volvo mentioned no oil/fuel additives should be used as can cause more harm than good...


Keep wasting your money... 😁


All correct


and illegal mot fail etc

Redex Petrol Fuel System Cleaner - £4 Instore @ Asda
-247° Expired
Posted 14th FebPosted 14th FebLocalLocal
Redex Petrol Fuel System Cleaner - £4 Instore @ Asda
£4£520%Asda Deals
Usually £5 eurocarparts and other places. Saw this in asda and was shocked (shock) how its £4 also wilko sell these for £4.
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My local ASDA have twin packs for £4


2£ Wilkinson :)


There is a deal In my Asda for a twin pack for £4, is this what you meant?


I’ll take it as you don’t shop enough :{


Lol (lol)

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