This looks very much like Ultra Glass Sealant V2 - i.e. a cloudy liquid. This smells very much like Ultra Glass Sealant V2 - i.e. solvents. The instructions for this are remarkably similar to Ultra Glass Sealant V2 - i.e. apply with a microfibre cloth, ensuring a good even coerage, buff with a different microfibre cloth. Take a clean cloth and go over all the surfaces one last time, buffing in circles rubbing off the last residue. (Stubborn marks can be removed by damping a microfiber and wiping over).
By way of prep, I polished all exterior glass (and the inside of the driver's window) with GTechniq G4, buffed using G6 to dampen the cloth.
I've now applied multiple coats of this - it suggests on the bottle to top up once a week for 4 weeks to get 6 months protection. I'm likely to reapply in 4 months, so I did various coats over 24 hours instead. This allowed me achance to test out various different application methods so;
1st layer; sprayed onto a microfibre cloth, spread over one window at a time (front & rear screens done a whole rather than in sections, subsequently between 0-2 minutes curing time), buffed immediately. As with Ultra Glass Sealant V2, it spread really easily and a little went a very long way, it was also incredibly easy to buff even with no curing time.
I then waited (well, did something else for) a couple of hours before applying the 2nd layer, which was applied in the same way as Ultra Glass Sealant V2 is; namely sprayed onto a microfibre cloth, spread over all windows, allowed to cure for up to 15 minutes, then the residue is buffed off. Except it didn't cure. Instead it flashed off, akin to a glass cleaner, within a minute. Still, I left it 15 minutes before buffing.
So I immediately applied a 3rd layer to the rear screen, also applied with a microfibre cloth and wiped over the whole screen. The driver side half was buffed after a few minutes, the passnger side was not and simply flashed off. This was left ~14hours to cure.
In the meantime a thought occured to me; Car Chem don't sell Ultra Glass Sealant V2 under the new branding (it's still available under the Originals branding though), instead they now sell Clear View Glass Cleaner which is a cleaner and sealant in one. Can you see where I'm going with this? Well, that's a blue liquid and this is not. BUT! Car Chem, when announcing the Mystery Boxes, did state that products could include surplus prototypes as well as old & new. So, it's possible that this is either a prototype of Clear View, a variation of Ultra Glass Sealant V2 (or both), or something else entirely. Putting two (this flashing like a glass cleaner) and two (Clear View being a cleaner sealant) together, I came up with trying it on the shower door. I can confirm that this glass sealant does remove reasonably fresh water spots and soap residue from glass shower doors. I can also confirm that this glass sealant does work better when it's buffed (I applied to half the shower door but only buffed half that area after a couple of minutes). I cannot confirm that this is any sort of variant to either Ultra Glass Sealant V2 or Clear View Glass Cleaner.
The following morning, I applied a third layer to the front screen; wiping on with a microfibre cloth and buffing after a few minutes.
And then for good measure, I applied a fourth layer to both front & rear screens in the same way, after cleaning the interior glass (with G6, for those interested) - so maybe between 20-30 minutes to cure between layers 3 & 4 on the front. A few hours later I rebuffed all exterior glass to make sure I've removed all streaks.
At no point have I noticed any residue left to buff with this, however where it isn't buffed anyway there's noticeable streaking (more noticeable when the surface has condensation on - or in the case of the shower door, when it's steamed up), but it seems so far that this is really easy to buff out a good few hours later - currently at 12 and counting on another test section of the shower!
Oh, and at some point during all that, I'd used this much of my litre:
That's about 2ml. Since then, having done 4 layers on the front & rear screen, 2 layers on each side window & wing mirror glass on the Z along with the shower door (inside & out), I've used maybe another 7-8ml.
Assuming I over apply and use 6ml to do four layers on the Z, it'll last me 166 applications. And assuming 6 months per application, this bottle will last me up 83 years. Even if each application only lasts 2 months, the bottle will still see me through the next 27 years.
So, let's find out how long this bottle is going to last me then....