I did the SG on my new Optima 2 weeks ago. SG is meant to protect the paint from oxydisation not damage. Its 5 year warranty covers the paint quality. SG is not meant to protect against physical scratches or damage from flying stones on highways. It does provide a certain degree of protection as it covers the original paint with another layer but dont expect some extraordinary protection.

With the Sierra Glow, u wont need to polish or wax for 5 years or so they claim. But for periodic maintenance, u must use the clay bar (which is simple enough). Normal washing is recommended. Avoid going to car washes as they use strong detergents and cloths in bad condition which may damage the paint surface.

But for only RM700 and a 5 year warranty, i would say its worth a try. Even if it lasts 2 years ill be happy. But Mr Choong is a very friendly person and quite accomodating. Give it a try. U wont regret.

have been coated by SG for few months, so far still satisfy, highly recommend.

Actually, of all the fabulous comments about SG.... there is one bad comment I heard...but this lazy bum never know how to clean his car....he never dry his car until all the water spot were impossible to remove...especially at the bonnet area

So if you wanna add a coat of SG, or whatever product, and just leave the car without taking care of it....even the best coats will not give you the best protection..

I use clay bar and ipo(pure alcohol) to get rid of water mark. It works but very time consuming. U nid to wash car, clay bar, wipe clean and then wipe with alchohol...easily 3hours.

I wash frequently and yet water mark still unavoidable. I do found out that after clay bar treatment, paint surface is more sticky and tend to get dirty faster

The only way to reduce watermarks is so keep your car dry at all times. As rain water is acidic, it will rapidly etch into the surface if it is not wiped off. It also contains mineral deposits that trap itself into the paint in those microscopic pits, which is why you see marks on your paintwork.

The only way is preventive maintenance, or a polish to remove it. Given that we live in a country with lots of smog, pollution and constant rain watermarks are highly inevitable.

After applied SG, we r advice not to polish or wax our car. This will remove SG coat. The only way to maintain the car is to use clay bar. But u don have to do it every time after car wash. Maybe once a month depending on your available free time. As for using of alchohol, it is recommended to do it as often as possible. So, its up to individual to decide the frequency of claybar washing and alchohol usage. For me, I noticed that after clay bar, car paint is more shining and looks like showroom condition. Downside is, it attracts dirts very fast.....

Ive used SG for 6 months now. The shine seems to be a bit less than before. Paint surface is also not smooth anymore as compared to when u do a new coat of polish. I clay bar the car about once a month. Is this normal? Any of you experiencing the same?

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Added on November 15, 2012, 11:52 am

Did the water spots appear only now or was it there before?

why dun u call to Mr Chong? since you got 5 years warranty.

 
I remember Mr.Choong said the warranty for 5 years can be claim unless your car colour change to yellowish, so that mean this does not included!