Unfortunately, this deal is no longer available
Redex Pre-Mot Petrol & Diesel 400ml £5 each @ Tesco (Min Basket £40 - upto £4 delivery)
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Redex Pre-Mot Petrol & Diesel 400ml £5 each @ Tesco (Min Basket £40 - upto £4 delivery)

8
Posted 22nd Apr

This deal is expired. Here are some options that might interest you:

Redex Pre-Mot Petrol 400Ml was £10, now £5. Offer valid for delivery from 23/04/2020 until 20/05/2020. Description below;

If your car's emissions are too high or the warning light is on, it can be an automatic MOT fail. Using Redex Pre-MOT before the test will help to reduce emissions so can help you pass your MOT. It also helps improve the life of your engine.
H259cm x W94cm x D56cm
Reduces exhaust emissions
Restores engine performance
Can help your car pass its MOT
Pack size: 400ML

Link for petrol version - tesco.com/gro…666

Diesel version also available at same price. Description below;

If your car's emissions are too high or the warning light is on, it can be an automatic MOT fail. Using Redex Pre-MOT before the test will help to reduce emissions so can help you pass your MOT. It also helps improve the life of your engine.
H259cm x W94cm x D56cm
Reduces exhaust emissions
Restores engine performance
Can help your car pass its MOT
Pack size: 400ML

Link for Diesel version;
tesco.com/gro…659
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8 Comments
"If your car's emissions are too high or the warning light is on, it can be an automatic MOT fail. Using Redex Pre-MOT before the test will help to reduce emissions so can help you pass your MOT. It also helps improve the life of your engine."



Love the way this claims to disable your engine warning light for MOT purposes.






Everyone knows that this stuff is SPECIFICALLY NOT recommended for modern cars.
Most manuals state that using fuel additives could void engine and car warranties.

Amazing that this stuff can still be sold..
This crap is equivalent to putting spring water in a bath.

Take your car out for a good spin, Get the catalyst nice and hot by giving it an Italian tuneup and it'll do a much better job than this.
Do you like Redex or something?
.MUFC.22/04/2020 15:27

This crap is equivalent to putting spring water in a bath. Take your car …This crap is equivalent to putting spring water in a bath. Take your car out for a good spin, Get the catalyst nice and hot by giving it an Italian tuneup and it'll do a much better job than this.


I had a 2006 ford focus diesel. failed emissions. I tried everything to get it to pass including driving about 50 miles at high speed in low gear for Italian tune up. Still failed. Told by a mechanic friend to give one last shot using this. Car passed with flying colours and still on road
Snake oil
john_chappell22/04/2020 15:42

I had a 2006 ford focus diesel. failed emissions. I tried everything to …I had a 2006 ford focus diesel. failed emissions. I tried everything to get it to pass including driving about 50 miles at high speed in low gear for Italian tune up. Still failed. Told by a mechanic friend to give one last shot using this. Car passed with flying colours and still on road


Redex is a poor performing additive, Besides it's pretty easy for a diesel to pass emissions if the DPF if is working as it should be. It's most probably just luck. It contains an ingredient called 2-EHN 2-Ethyl Hexyl Nitrate and there is some science behind it but it contains it in very small quantities. If you want to use additives that will actually work much better for diesels then I'd recommend this stuff it's 99% rather than 5%. It can potentially lower the combustion temp of the diesel, Hence it burns more efficiently and helps with DPF regeneration active and passive etc.. It won't clean as such but can help clear the DPF.

To clean I'd recommend Seafoam it's the only additive that I've seen genuinely clean carbon off pistons etc..

Yes on older cars Redex has been known to help restore a little power but it won't do much to a modern car. There are loads of additives out there that do a much better job but in general they're a waste of money. Your car really shouldn't need them, It won't be long before the engine lights back on

Also changing the oil frequently will help more, During active regeneration's the diesel can end up mixing with the oil, This can increase the oil level and dilute it so it doesn't lubricate as well and can eat away at various different seals causing leaks and in some cases engines blowing up due to the increasing pressure due to oil level! Especially if active regeneration's are cut short and you do lots of short journeys etc.. Short journeys equal more carbon buildup, more carbon build up equals more active regeneration's more regeneration's equal more diesel in the oil etc.. I'd recommend changing it every 6k or maybe even less if lots of stop start, short journeys etc.. Doesn't matter what oil so long as it meets manufacturers minimum specs.

Me personally, I've tried 2-EHN 2-Ethyl Hexyl Nitrate and didn't notice any difference but mines a relatively modern car.
.MUFC.22/04/2020 16:12

Redex is a poor performing additive, Besides it's pretty easy for a diesel …Redex is a poor performing additive, Besides it's pretty easy for a diesel to pass emissions if the DPF if is working as it should be. It's most probably just luck. It contains an ingredient called 2-EHN 2-Ethyl Hexyl Nitrate and there is some science behind it but it contains it in very small quantities. If you want to use additives that will actually work much better for diesels then I'd recommend this stuff it's 99% rather than 5%. It can potentially lower the combustion temp of the diesel, Hence it burns more efficiently and helps with DPF regeneration active and passive etc.. It won't clean as such but can help clear the DPF.To clean I'd recommend Seafoam it's the only additive that I've seen genuinely clean carbon off pistons etc.. Yes on older cars Redex has been known to help restore a little power but it won't do much to a modern car. There are loads of additives out there that do a much better job but in general they're a waste of money. Your car really shouldn't need them, It won't be long before the engine lights back on Also changing the oil frequently will help more, During active regeneration's the diesel can end up mixing with the oil, This can increase the oil level and dilute it so it doesn't lubricate as well and can eat away at various different seals causing leaks and in some cases engines blowing up due to the increasing pressure due to oil level! Especially if active regeneration's are cut short and you do lots of short journeys etc.. Short journeys equal more carbon buildup, more carbon build up equals more active regeneration's more regeneration's equal more diesel in the oil etc.. I'd recommend changing it every 6k or maybe even less if lots of stop start, short journeys etc.. Doesn't matter what oil so long as it meets manufacturers minimum specs.Me personally, I've tried 2-EHN 2-Ethyl Hexyl Nitrate and didn't notice any difference but mines a relatively modern car.

Well it worked in mine
john_chappell22/04/2020 16:14

Well it worked in mine


You were lucky I'm pleased it worked for you, The other stuff I recommended will work even better since it's better stuff Some folk even add a bit of 2 stroke oil to it to aid lubrication.
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