Looks like a good product Elton and it makes sense to top up the lubricants in the system, but there is one problem with A/C systems.

The dust collects on the interior cooler and forms a layer of dirt there.
Once this is added with moisture from the cooling process, it will make the aluminium fins and coils rust quite easily.
If the a/c coils are designed well, the dirt won't collect there and will be washed away by the moisture collected on the coils.
There is no way to clean off this dust unless you get an a/c shop to open the inside and flush it all out.

Newer model cars did have air filters inside (similar to house a/c) that captured dirt/dust and these filters need to be cleaned or replaced occasionally.

Another suggestion is to regularly/occasionally run your blower at full speed without the a/c running when you can (on cool evenings or really early in the morning).
There is a chance that this dries out the dust in your coils and makes it easier to get flushed out when you run the a/c again.

You could also consider alternative refrigerants that are more efficient but that a few years away from implementation.
Something I'm looking at 10 years ago and want to intro into Malaysia in the future.

But saying all that I may come and have a try of this product from you one day.

This post has been edited by bigfatant: Sep 21 2011, 07:02 AM