QUOTE(mason123 @ Sep 27 2020, 12:15 PM)
hi,
You seems experience in coating and wax. Some questions below need to seek your expertise as i did not really know about the details.
1) If we go for wax ourself instead of coating by others, what good wax product do you recommend?
2) You mention clay bar and wax, what the different, we apply both or apply either one?
3) Do we recommend to wax our new car once we get it? what are the pros and cons?
Hi!
1) I'd recommend Soft 99's Fusso Wax. It seems the wax was engineered for Japanese make cars and was designed for "soft paints" - easy application and buffing. Reasonably durable, 6 - 8 months before the hydrophobic effect strips off (but only slightly) and most importantly, very easy to the pocket.
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2) claying is the process of prepping the surface before waxing for better bonding, much like how people sand the surface of metal grills before putting on the paint - it also removes harmful contaminants so that it doesn't continue corroding their way through the paint layers.
if you run your fingers through the paint surface of your car, you'll feel "resistance" and if you listen closely, it sounds "rough", that's the environmental contaminents that already settled onto the paintwork.
clay bar is the tool used for claying (always shaped like a soap bar) and is also relatively cheap but remember though, it cannot "pick up" all environmental contaminents but definitely good enough for pre-wax prepping application.
wax is just, well, wax

3) you can wax your car anytime you want, there's nothing in it that will have any adverse effect on the paintwork but of course it will be best if you can apply the wax when the paint is fresh out of the factory because the paintwork has not been contaminated yet.
imagine the human face, if a baby was given adequate protection from the time he/she was born and then regularly throughout his/her lifetime, his/her face will appear flawless BUT if he/she was only given protection when he/she was 18 years or after his/her face already suffered from acne breakouts then it may be too late to retain that flawless appearance that he/she once had but not impossible because he/she could undertake treatments or even plastic surgery - the latter is a metaphor for "polishing".