Dinitrol UK

Dinitrol UK


I've used some Dinitrol 4941 underneath my car, via a compressor and sparaygun. I've set it at the recommended pressure and it works fine with the spraygun itself but does not work with the extension probe at all. Plenty of air going is through the probe, but no Dinitrol. Can anyone please advise? (good product by the way)
I see you offer free uk mainland delivery only . Why exclude the Islands ? Curiously !

Dinitrol UK supply OEM approved systems for bonding, sealing noise reduction, abrasion protection and corrosion prevention. DINITROL® UK are the only official authorised UK import hub based in Warrington, Cheshire.

The products can be purchased via our e-commerce website www.dinitroldirect.com and are covered by our genuine product guarantee. We currently support a UK network of DINITROL Treatment Centres who provide a wide range of rustproofing applications for cars, 4x4, LandRover, Vans, Buses, Coaches and Commercial HGV vehicles. Our rustproofing treatment services include vehicle underbody chassis coatin

Operating as usual


Dinitrol is heading to Goodwood Retro with South West

We're really excited to announce that we will be attending the Retro Rides Weekender at Goodwood Motor Circuit on the 29th and 30th of May 2021! After over a year of not being able to get out and meet people, we're super excited to be able to finally attend an event! And what an event it will be. Unique paddock displays, sprint track action on the Saturday, auto solo on the Sunday. Retro cars on display all over the site on both days and an all cars track parade on Sunday!

Book tickets here: https://www.trybooking.com/uk/events/landing?eid=17357&


Great to see our products protecting future classics

1999 BMW 523i in at ALM for a little restoration and mechanical work.
All under trays removed, underbody steam clean and treated with Dinitrol UK products to stop rust and protect the underbody.
Brakes all round including lines all filled with fresh fluid and new rear brake back plates.
Car is absolutely beautiful and drives like new, a very well looked after car that drives better than some nearly new cars, a true testament to BMW build quality 22 years on.


Armour Rustproofing

Here's a very brief rundown of what goes into an Armour Rustproofing full treatment.

1) Vehicle is thoroughly jetwashed.
2) After drying work begins to remove as much rust as we can with wire wheels, scrapers and needle gun.
3) Cleaned areas are then treated with Built Hamber rust converter.
4) Exhaust, brakes, body masked off.
5) 2 coats of zinc primer then applied to treated areas.
6) Hard to reach places, box sections and cavities are injected with Dinitrol cavity wax.
7) Underneath then coated with a good quality Shutz.
8) Upper panels (doors, bonnet, tailgate etc) injected with Dinitrol cavity wax.

We take pride in our work and treat every vehicle as our own.
Most vehicles get upto a 5 year guarantee for the treatment on the vehicle.


Practical Classics

DH: Saab winter update.... Along with the TR7 I have been using it daily. Probably the best winter hack I have ever had. The rust prevention work I had done at corotec.co.uk in October has held perfectly. I pulled back all the plastic shrouding and cleaned off the underside. It's as good as the day it went on. and I have put the 95 through the worst of winter. So far so good. You can get 15% off a treatment with Mike at Corotec if you tell him Practical Classics sent me... worth doing. Dinitrol UK Saab 9-5 only Saab nuts! Saab Owners Club GB Saab Enthusiasts Club UK Saab Owners Club GB Corotec


South West Rust Proofing


South West Rust Proofing

A Defender 90 which left us yesterday after being given the full SWRP treatment. Here was the customers feedback:

“After quite a bit of research I chose Southwest rust proofing. Despite the 60 mile trip reach way, it was worth it. From start to finish the communication was excellent. The car was thoroughly inspected prior to the work and very detailed photos sent throughout the process. The work was carried out to a very high standard and the car looks fantastic. The work is provided with a 12 month warranty and a free inspection after 12 months. I wish all workshops worked like this! I'm confident my car is protected properly. Highly recommended.”
#defender #landrover #rustproofing #dinitrol #landroverlife #nissan #toyota #classiccar #honda #japaneseimport #ford #mazda #mx5 #bongo #vwcamper #vwtransporter #hilux #lexus #ranger


South West Rust Proofing

It’s about time we introduced our most fantastic team. Without these four people, we would not be able to deliver such a high quality and amazing service. Lilli, Garry, Richard and Scot make up such a great team and embody outstanding customer service and we are so proud of them!
#teamwork #customerservice #team #rustproofing #dinitrol #dinitroluk


To all disco 3 & 4 owners out there!!

A very well taken care of Discovery 4 in for rust proofing. We are starting to see the same decline in Discovery 3 and 4's as we have seen in Discovery 2's. If you own one, now really is the time to think about rust proofing.


Armour Rustproofing

Range Rover Sport out today after a full Armour Rustproofing treatment using Dinitrol.


Another fantastic job by South West Rust Proofing

A nice tidy up of this rear crossmember in with us last week using Dinitrol 445.


Honoured to be supplying the army race team!!!

Our long term sponsor and friends at Mpex have once again supplied the goods for Sgt Tom Sykes in his ground up built BMW 330ci chassis.

Using Dinitrol UK 4941 and RC Rust Remover the fresh chassis should last for a fair few seasons of racing yet!


More of our product being distributed round the UK

Safe to say our customers are protected from rust with our latest Dinitrol order!!!
#rustprevention #corrosionprotection #dinitrol #underbodysealant #dinitrol4941 #rustremover #onshore #offshore


We have certainly main corrosion protection kits for these beauties

Have you got a custom paint job you want to take on?
Search for your local stockist on mpexdirect.com
#paintwork #paintjob #colourmatch #custompaint #customaerosol #vwtransporter #vwcamper #splitscreen


It’s not just 4x4s that get protected

A very well looked after Ford Fiesta ST which came over to us from Bristol this week for Dinitrol rustproofing. This was a very clean example of the marque.


Fantastic news for South West Rust Proofing

We are very pleased and excited to announce that we are expanding our current location with a brand new workshop! We were lucky enough to secure two units on our current industrial estate which are currently being made into one large unit, fully refurbished as well as having a full roof replacement. Our operation has already begun its expansion with the recruitment of Scot, our new trainee vehicle rust proofing technician who has been under the wing of Garry, our expert rustproofing technician. This is expansion is a huge investment for us in uncertain times but we decided very early on that we want to pave the way in the UK and provide the very best rustproofing service available so that is what we are going to do. We look forward to unveiling the new premises in the coming weeks! We appreciate all the support from customers and local businesses and we are very excited about the future.


South West Rust Proofing

As part of every treatment package, you will receive a link and password to be able to log into our website and view your vehicles treatment images. We have recently improved this service by uploading images as they are taken so that you are able to follow your vehicle as it moves through the process. It is important to us that we provide transparency throughout the treatment of your vehicle and after. 📷


South West Rust Proofing

UPDATE: We will be reopening with a scaled down team. Please follow the link to read more. We will be offering a free collection and delivery service within 15 miles of our workshop. However if you would like to rebook, we will still be in contact with you to discuss options. We are able to operate by implementing a fully contactless service. If you have any questions please get in touch.



South West Rust Proofing

Hello! Despite 'garages' being on the exclusion list, we have made the decision to close the workshop until the 14th of April 2020 where we will then re-evaluate the situation within the country. Our team are completing the last vehicles on site and they will then be going home. All customers with a booking during this time have been contacted or will be contacted in due course.

Our team are of the utmost importance to us, we have to think of their safety as well as the safety of their families. We know that this is the right decision although it was a truly hard one to make. We hope that you understand.

We have some really exciting news to announce when we return and we cannot wait to share it. In the meantime, to all of our customers existing and new - thank you for all of your support up until now. We couldn't be more grateful to you for helping us make the business a success.

For now, stay home and stay safe.

From, the SWRP team


South West Rust Proofing

We at South West Rust Proofing are trying to maintain business as usual in these unprecedented times. We are open as usual, however with a few measures in place:

1. Appointment only. Our team will happily discuss your requirements over the telephone or email and we will continue to make bookings as usual.

2. Our Reception door will be locked, our service can be called with the use of a bell. We will then ask customers and delivery drivers to maintain the 6ft distance as set by the Government.

3. We will only take the key we need for your car and ask for you to remove it from large bunches of keys. This is so it can be easily disinfected.

4. All vehicle cabins will be disinfected before going in to our workshop and before it is returned back to you.

5. All of our technicians will continue to practice good handwashing techniques as well as wearing gloves inside your vehicle.

6. We are asking all customers to pay via BACS or payment over the phone where possible so there is no handling of the card machine. You are still welcome to see your vehicle prior to paymenti if you wish.

7. Our courtesy cars will be fully disinfected inside and on external handles before being hired out to you.

8. Please place your locking wheel nut key on your passenger seat to reduce the amount of time we spend in your cabin.

Thank you so much. It goes against the grain for us to put distance between us and you as we have spent so long trying build a close relationship but we know it is necessary.

We wish you and your family good health and safety. Thank you so much for all of your support in these difficult times and we look forward to your continued support as we navigate through this.

Meanwhile, please see below for some essential reminders on what we should all be focusing on right now.


As always fantastic results from South West Rust Proofing

Preparation is key. It is the only thing that stands between a poor rust proofing application and an excellent one. There are many different tools we use for preparation, we have years of experience and we know what is best for your vehicle.


Dinitrol products + follow up service!!! What more do you need?

With our treatment package we include a free annual top up as standard. Here is a Nissan Silvia we have in today after one year on the road looking absolutely fantastic. Dinitrol is the UK's market-leading rust protection product for a very good reason.


South West Rust Proofing

We are here taking about the Dinitrol range which we use exclusively at our professional treatment centre.


South West Rust Proofing

Because we are an approved Dinitrol Treatment Centre, we are given a specific process by the manufacturer to follow when treating vehicles. It covers everything from the pre-inspection, pressure washing and drying procedures to the preparation of the underside and application of the product.


South West Rust Proofing

Read Read Read !!!

We have been reviewed by PistonHeads, one of the largest online car enthusiast websites in the world. You can read what they had to say about us in the article here:



South West Rust Proofing

Before treatment, after preparation. Clean, prepared metal, components masked and chassis ready to treat with Dinitrol 4941.


Any car from any country

This photo shows a newly imported Nissan Elgrand pre-treatment that we are working on this week. It's in lovely condition, the customer has kept it garaged until he was able to have it rust protected.


So true Armour Rustproofing !!!

If the company you use to Rustproof your vehicle only takes 1 day to do it, this is what they are missing.
I have a day and a half in this one already in jetwashing and a mornings grinding so far.


Another vehicle protected with Dinitrol!!!

Lovely day for jet washing.
Cleaning this 110 ready for a full Dinitrol treatment.

[01/22/20]   AmaZing to meet the team at South West Rust Proofing !!! The standard of the work and team here is completely unbelievable and amazing!!! Go check them out!!!


Are you prepared?

Whether you love the muddy adventures in your #4x4 or summer sea side fun in your #classiccars ensure to keep them #rustproofed with a #Dinitrol full underbody application 👍💪.
#porsche #protectionisthekey #protectfromrust #bestinthewest #southwestrustproofing #broadlanelandrovers #approvedcenter


Great work by Armour Rustproofing and 4941

Mitsubishi Delica back with its owner yesterday.
As it was an import very little prep was needed.
The customer didn't want a Shutz finish so we went with Dinitrol 4941 on the underside.
Cavities etc also got lots of Dinitrol in them too.


Our range is being featured in Fast Car Magazine next build!!!

So we can finally reveal we have teamed up with @fastcarmagazine for their next build !!!
Stay tuned to see all our products in action !!!
#fastcarmagazine #honda #japfest #duckhamsoil #brakecleaner #project #projectcar #rebuild #dinitrol #performanceford #performancevauxhall #retrocar #slammed


Dinitrol UK

Black solvent based vehicle underbody coating ideal for cars. The underbody coating product is widely used in the treatment of vehicles during production, at import plants and in aftermarket applications. When applied to a clean, dry surface, it adheres to both painted surfaces and those coated with a layer of PVC or similar material. Zinc, rubber and plastics are completely unharmed by the product. The OEM (Original Equipment Manufacturer) forms a robust, universal film with good abrasion resistance and self-healing properties. The product can be applied with an undercoating gun or convenient easy to use aerosols.

DINITROL® 4941/Car Underbody Chassis Coating product is ideal for passenger cars, classic cars, 4x4 off-road SUVs and Land Rover. Protect your commercial vehicle fleet with DINITROL® 4941/Car Underbody Chassis Coating.

Buy Online via the Official UK DINITROL® website:


Protect your vehicle underbody chassis against stone-chipping, water ingress and highly corrosive road salt.

Read our DINITROL® Underbody Chassis Coating




Products on show at the CAAR Group Show!!!

All set up and ready for the CAAR GROUP trade show!!!
We have brought many amazing brands to the group members!!!
#dinitrol #evaporust #mpex #duckhams #corrosionprotection #smartrepair #vehiclepaint #rustremover #carrefinishing #stonechiprepair #duckhamsoils @ Forest of Arden Marriott Hotel & Country Club


Take a look at these results by South West Rust Proofing , Dinitrol products used through out!!!

Let's talk preparation! It is the most important part of the process and it is what takes the most time. Spraying the product on, whilst care and effort is taken to ensure it goes on smoothly and at the correct thickness - takes the least time. This picture shows a Defender 90 and the effort taken over 8 hours of preparation of the surface and 24 hours of rust conversion using RC900. There is no substitute for the hard work that goes into this kind of preparation and it is what we pride ourselves on.

If you book in with us, not only can we assure you that you will receive the same preparation effort but we supply you with over 50 photographs to prove it. Preparation and transparency are the core of what we do.

Our Story

DINITROL® D.I.Y. Rustproofing Kits

Our comprehensive range of DINITROL D.I.Y. vehicle rustproofing kits are ideal for corrosion protecting classic cars, 4x4 off road vehicles, passenger cars, motorhomes, commericial fleet and agricultural vehicles. Protecting your vehicle corrosion and preventing rust is simple with our easy step by step guides. Also you can additionaly purchase a detailed spray diagram specifically created for your vehicle model to ensure no safety sensors in doors and cavities are damaged.


OEM (Original Equipment Manufacturer) Approved Product Solutions

Videos (show all)

DINITROL® ML Penetrating Cavity Wax Product Application Demonstration
DINITROL® 443 Zinc Paint Video Product Demonstration
DINITROL 4941 / Car Underbody Chassis Coating Product
DINITROL 4941 Car Underbody Coating with Undercoating Gun & Compressor Cleaning Video
Video Guide How to Clean a GRACO Fireball Pump & Spray Tool Equipment DINITROL Underbody Coating
Spray Tool HS demonstration using DINITROL® ML cavity wax 1 Li...
DINITROL Removal of sound deadening sponges vehicle rustproofi...
DINITROL Why you should rustproof your vehicle, stone chip pro...
DINITROL Rustproofing vehicle preparation for underbody chassi...
DINITROL Vehicle Rustproofing Treatment Centre


Corrosion Protection, Vehicle rustproofing, Classic Car Restoration, HGV chassis coating, Vehicle underbody chassis coating, Penetrating cavity wax and rust converters for Cars, Classic Cars, 4x4, LandRover, Vans, Buses, Coaches, Commercial Vehicles including HGV


Eagle House, Eagle Park Drive

Opening Hours

Monday 8:30am - 4pm
Tuesday 8:30am - 4pm
Wednesday 8:30am - 4pm
Thursday 8:30am - 4pm
Friday 8:30am - 4pm
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