all of my friends that went for the SG coating were told to wash with water and to use a claybar if there are bonded contaminants on the surface. I wonder how you were not aware of this info?

The problem with most ppl is that they dont realise a few things about maintaining a car that has a coating:

1) You should not wash the car on your own unless you have the correct cloths. You cant use normal soft cloths as even this will scratch. The right cloth to use for the body is actually a type of skin cloth. This cloth isnt cheap and costs about RM80 per piece. Most of the professional car washes have this. Thats why its always advised that you should send your car to those car washes instead of the roadside ones or doing it yorself. You can get yorself/yor friends enrolled on 1 of those membership programs and you'll enjoy cheaper washes for a few years. In Feb 2012, I recommended a friend to do his polishing/coating at Pit Stop TTDI and since then i get my K5 washed and vacummed for only RM8 (normal price RM20). This offer is valid until Feb 2015 which i think is a good deal. Look for such deals and ull might just find one.

2) Cars with coatings should always be wiped dry after a rain. The water must never be left on the surface overnight or else you will get watermarks. But if you use that normal cloth, then ure gonna scratch the surface. So might be worth investing in the correct cloth which any professional car care centre can order for you. You cant get this type of cloth at the hardware shop so dont bother trying. All those cloths supposedly suitable for cars are in fact not suitable. If your car gets wet after a rain and you have no means to actually wipe down the car, at least hose off the car so that the acidic rain water is not left on the car surface as this eats into the paint and causes the water marks.

So before you blame the coating, first ask yourself if you have maintained the coating in the correct way. Thats why you should always think twice before spending money on doing a coating. If you feel you cannot spend the money and effort to maintain the coating then you might as well not do the coating and just do the periodic polish and wax instead.

Hi Termibait, Wowwww! Sorry to learn that after you have clay bar your car and become sticky and get dirty faster. Glad if you can contact me to arrange a date so that I can rectify the problem for you. Be glad if you can let me know more detail when you are using the clay bar.
1. IPA need to be diluted to a ratio of 1:1 with water, it cannot be use concentrated.
2. What normally use when using a clay bar? Water or shampoo?
3. How much pressure do you use when claying?
4. What sort of dirt are you referring to, that your car get dirty faster?
5. Did the car surface condition smoother after clay bar?
Thank you. Hope to hear from you.

Got 5 years warranty, just call them make appointment they should do it back for you..

May I know why u give up?
After 1 yr, ur car still shining?

Use alcohol to wipe??! That's really my first time hearing this. Is that the instruction provided by the car detailing shop?

that's the thing I don't get it with all these so called coatings etc!!!!

After you coat, they advise you to wash your car after rain, wash your car if got bird droppings, this and that wash wash.. If like that, why on earth I need to do coating????? I rather have it normal wax and wash the car as per advised!!!!!

That's weird. Supposedly one shouldn't need to take care the coating with IPA. It just doesn't make sense for the detailing shop to ask you to do that. 

The primary use of IPA is to remove the oil/residue left from compound/polish product. During paint corrections stage, IPA helps to reveal the remaining paint defects which might be masked by the polish residue. Another use of IPA is to provide a fresh, cleaner surface for coating to bond with prior to coating application.

Unless the coating might suffer premature deterioration due to oil after bonded with the paint, which I have never heard of,  consumer shouldn't need to take extra steps to wipe the coating with IPA.