GTechniq C4 Permanent Trim Restorer 15ml Plastic Dressing Engine Bay Detailing

Excellent product. Does exactly what you need. Follow instructions for best results. Area must be clean and grease free. Use an alcohol to cleanse before use. Apply small amounts. Obviously if your plastic has surface damage it probably won’t be any good. Sun faded plastic it’s great. Do not get on your paintwork. Only down side is it’s expensive. For a mid to large car that’s has a lot or large amount of plastic trim you do need the bigger bottle. Other than that buy a car with painted trim.

I don't normally write reviews on products but I am so impressed with this stuff that I felt compelled to. I just bought a 1997 VW Golf and as you can imagine for a 21 year old car the plastics were pretty worn out. After a single application of the C4 trim restorer the plastics look practically new. I genuinely can't believe how good the results are, and for the sake of £27 and half an hours work it's a far cheaper option than finding replacement trim pieces for your entire car. If you're sat on the fence about buying this because of the price or if it actually works or not, just buy it, it really is that good.

This wasn't cheap and you only get a tiny amount, but a little really does go a long way. The product is amazing - it brought my plastics back to life but without giving them a cheap 'wet look' that other back to black type products do. The colour seems to be staying a lot longer that other products so far too.

Firstly this product is different from the more basic trim cleaners/silicone restorers you find in your local Halford or Auto parts store. The cheaper and more basic silicone cleaner/restorers such as Meguiar's Ultimate Protectant Plastic Restorer, do make the trim look shiny but the effect only lasts till the next wash or a couple of weeks tops in sunny or rainy weather. Whilst the Gtechniq C4 is very expensive it claims to last up to two years but even if it give 18 months until I need to reapply then it is worth it. After seeing vehicle details recommending it on You Tube I had tried a product called Solution finish, which is more like a dye and a little I spilled stained the brick in our driveway black. But application of Solution finish lasted less than six months. The Gtechniq C4 liquid is clear and application is easy, Gtechniq even supply the application pads. For both the C4 and Solution finish treatments prior to application I cleaned the trim with rubbing alcohol and allowed good time for it to dry. At first I was not really sure if I had just wasted my money as it did not seem to be making much difference but after ten/fifteen minutes it was easy to see the Gtechniq C4 had made a real difference to the look of the vehicle's trim, which improved further when I buffed off the residue.. Now a month after applying the C4 and even though the vehicle has had a hand wash and also been put through a car wash the trim still looks as fresh as it did directly after the I applied the C4. Hopefully it will last but even if I have to do it again next spring it will still have been worth every penny

I have been wanting to try this line of products for ages so I was pleased when it came quickly along with the correct applicator discs. I made sure the trim was clean and fully dry and then applied the product. I was amazed by just how far a few drops of the liquid went and how easy it is to apply but I made the costly mistake of not taping up before application and a little of the product went onto the edges of my paint. Do not make the same mistake I made, this stuff is Chuck Norris hard to get off paint. The bottle itself easily hold enough for about three cars worth of trim. Unfortunately it didn't seem quite so willing to stick onto black plastic trim that was its intended purpose. It's saving grace is that it only came off when I pressure washed the car a few times, so while I'm not completely convinced by this molecular bond talk, it defiantly is a hell of a lot harder wearing than any trip restorer I have used before. The summary is it is very hard wearing and goes a long way but I think I was expecting a little bit more from it. Make sure you tape up first.

I've considered trying C4 in the past, but mixed forum reviews put me off (especially at the price). These negative opinions are likely to be from people who either failed to clean their trim properly or had trim that was too far gone. The rule of thumb for using this product is that if your trim looks good when it's washed over with warm water then it's a candidate for C4. Even then, you'll need to test that properly by deep cleaning the trim. My Yaris bumpers have been a bugbear of mine for years, and I've tried many different trim treatments with limited and very temporary effect. Back to Black was the one I settled on, but after a couple of heavy rainfalls it started to streak. It also left loads of gunk on my bumpers. To use C4 effectively you need to scrub your bumpers/trim with warm soapy water and a brush or gentle scourer to get as much of the dirt off as possible. Then use isopropyl alcohol and a cloth to DEEP clean them. This step cannot be skipped and it takes patience. Keep going until the cloth that you rub the IPA in with is coming up clean. This took a few hours for my bumpers, but it was worth it. The C4 itself is a doddle to use. Just rub a light layer of it over your trim and gently wipe off any excess with a clean microfibre cloth immediately afterwards. That's it. Just let it dry and cure and you'll get the results you see in my photo above. I don't know how long this will last, but we've had days of rain since I treated the bumper (and the rest of my trim) and the water just beads off of the plastic. I think it's going to last a long time... but don't rush the process!

Well, not often a product exceeds expectations but this stuff is without doubt the best I have used in 40 years of car ownership, the bumpers and trim on my BMW X5 look new, even scuttle trim, rear wiper trim. Yes its costly for such a small amount, but you get what you pay for as they say.

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