re-polish when re-applying. you'll benefit by removing road grime/film, correcting any marring and generally freshening up the paint and overall gloss levels. especially if it's been a couple years.
Completely agree with the above and specifically when the context is a Daily Driver.
The thread starter states his car is a
Garage Queen,
Al D said:
For a Garage Queen, you don't really need to worry about
Road Film or
Traffic Film because you don't drive this car on a daily basis nor in the rain. Road Film comes from and builds-up from
driving in the rain.
I explain the what, when, where, why and how here,
Road Film - If you drive your car in the rain your car has road film
So theoretically, with a Garage Queen, the coating should LAST as LONG as the manufacturer states and LOOK GOOD as long, (that's 2 things), as the manufacturer advertises as long as you
TOUCH it carefully.
This article talks about the topic of TOUCHING the paint.
How long will a ceramic coating last on my car?
This.
Until late October, my car had been wearing CanCoat for a year. Even though the coating was still performing pretty well, I could tell it was not looking it's best despite being well maintained.
While polishing everything out, it was easy to see where I was working. The metal flake in the paint was more visible and all of the surfaces were noticeably more shiny.
In the world of multi-year coatings, I don't know if I'd ever let them run their full course. For a garage queen you can probably go much longer than a daily driver, but at some point they will need a little care for the reasons mentioned above.
And your observations
mimic my observations. That is, over time, no matter WHAT you use to protect the paint - if the car is a daily driver it's going to get a film of dirt that is
IMPACTED ONTO the paint and it does not wash off.
Even if it did wash off, (lots of experts state you can remove road or traffic film with high alkaline detergent washes),
EVEN if it could be washed off, the paint is NEVER going to look as good as it will if you simply re-polish. Mechanically abrade the paint using GREAT ABRASIVE TECHNOLOGY and you WILL restore that super high definition high gloss glistening appearance like you did when you previously did this for prepping the paint for whatever it is you applied the last time you sealed the paint.
And one of the things I try to do in my career is take my deep thoughts about these topics and express them in informative articles that we collectively can all discuss and then at some point come to a consensus. I have not read through this entire article recently to see if a consensus was formed but for what it's worth - from the year 2018 - I'd say this is around the "Tipping Point" where the unwashed masses finally caught up with we in the online car detailing world - and they have all learned what a "coating" is as compared to a wax or sealant.
The case against multi-year ceramic paint coatings - Road Grime = Surface Staining Daily Drivers by Mike Phillips
Multi-year coatings are great. The protection lasts for years.
But don't confuse LONG LASTING PROTECTION to also mean the paint will LOOK GREAT for years and by this I mean, look just like it did the day you installed the coating.
Nothing lasts forever, not even you and I. Like Bob shared above, everything is in a state of chaos - everything is breaking down. Nothing gets better and better with time except wine and quality spirits, then you open the bottle and drink em and they stop getting better and better.
