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I've tended to use Rain X in the past to keep the windscreen and windows clear in heavy rain. It has also helped to easily remove the bugs and fly's that batter the screen in the summer.

Unfortunately after a couple of months of bad weather you find that you end up re-coating the screen as it starts to smear and the wipers start juddering. Not the ideal solution for me.

Last year we started having the cars valeted and the "car cleaner" as madam calls him started using the GTechniq range of products. We had the paintwork and the interiors protected on the A6's and earlier this year madam had a full treatment on her 2008. The "car cleaner" was supposedly doing my car but it appears that whilst I was out of the office madam mugged him and told him that there was a change of plan and the 2008 ended up being done.

Anyway, one of Gtechniq's products is their;

http://gtechniq.com/products/auto/perfect/exterior/paint/g1-clearvision-smart-glass

Which offers superior protection and water repellent abilities. I've had it on the Jag for the best part of 6 weeks now and I can report that it does all it says......well sort of.

Even in heavy rain at speeds above 50 mph water just streams off the screen, its so good that I hardly ever use the wipers. Using the wipers actually isn't any better. Water beading and dispersing water from the screen at speed is amazing. Fine mist and below 50 mph, around town for instance, and a quick wipe with the wipers clears it easily. A couple of mornings we've had a frost and instead of lots of scrapping to clear the screens it hardly needs any effort at all.

In that respect I cannot fault the stuff.....but.

When it first was put on we were advised to change the wiper blades if they were more than 6 months old as they could induce juddering, this we did, we also coated the wiper blades themselves.

Fortunately for the first few weeks we were blessed with rain but around town at low speeds I was forced to use the intermittent speed a lot and on occasions the wipers would judder the screen smeared in fact there was no improvement all. So we contacted Gtechniq technical for some advice. They informed me that for a few weeks it would smear because of the amount on the screen, 3 Coats have to go on the windscreen, there would be some smearing. I must say that has settled down now and the wipers don't judder as much. The ability for water to sheet off the screen at speed is absolutely tremendous in fact it makes wipers redundant, believe me this stuff is that good. But its when you are travelling at low speeds where you will need to use the intermittent wipers, you will never use your wipers on normal of fast again, that it doesn't perform as I would have expected. Its far better than Rain X, it should be this stuff isn't cheap, would I use it again, I doubt it. It still smears and I'm constantly using the washers to add lubrication to stop the wipers from juddering.

The only trouble is this stuff is supposed to last up to 2 years.



As for the paint coatings now this stuff is something else. I'll update you on that stuff after this weekend when the "car cleaner" returns to do my car.


Edited by: uncletone
 

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Interesting comparison uncletone. I have used rain X for some years but I do get complaints about smearing. I would change if there was better product that didn't smear. It seems that the Gtechniq stuff isn't that product. There are a number of alternatives but I have not tried any yet.
 

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Thanks for the write up, I've been thinking about giving Rain X a go and it sounds like it's worth a try at least.
 

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I use Rain X all the time they also have a product that you put in your washer tank so it always tops up the coating so no patches are introduced i have not put any on the 2008 as of yet as it is only a few days old but i certainly will within the next 1-2 weeks if we get rain :D
 

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I've used the Gtechniq range on three of my cars, G1 on the glass and also their body coatings

On my C-HR I only think I've washed the car 5 times on almost 3yrs!

If DIY then preparation is key and the screen has to be clinically clean, I am happy to do that myself, but will leave body coating to specialists as neither have the time plus my arthritis+ colder weather doesn't allow this:

A small bottle is enough to do a couple of cars

3 x coats on the front
2 x coats on the back
1 x coats on the sides (as these get no real wear)

My local detailer is doing this plus the body and interior in January, the cost is £350 which I consider a good investment, for the body he will:

1) wash
2) use ferrous remover
3) wash
4) use a clay bar to remove impurities
5) wash
6) two stage machine polish
7) hand polish and seal bodywork and glass and interior protection.

He will have the car for a full 2.5 days
 
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