falcaineer

Before the Leather and Vinyl Coating on the seat, no, just clean, dry and apply. Before the regular Graphene on other surfaces, yes.

It's cost/benefit. If you're willing to put in the time needed, there may be some benefit. But it's certainly not the full value of one solid layer. Plus, adding a thinner layer like spray coating results in an even thinner layer that may provide a little extra benefit. Is that worth it to you? If so, there's no harm, just no real benefit, either. Instead, I'd recommend going with the maintenance process like @The Guz linked above.

Assuming that the coating is properly applied, and the right prep work done beforehand as well, one layer of the Graphene Ceramic Coating is sufficient. When layering ceramic coatings, the law of diminishing returns applies and adding 2+ layers does not equate 2x+ protection. The coating essentially rejects itself. Instead to maintain, use any of the graphene lineup products.

Yes, all would work. But of those, my preference is actually one you didn't list, Interior Detailer. As a spray, you can use it over the entire engine bay after cleaning and (mostly) drying, and simply close the hood. It'll dry and self level, requiring only a quick level if any and leaves an incredible finish.

It's a strong degreaser and a few ounces in your wash bucket will help strip wax, sealants, etc. But we also have Strip Wash that is designed to do the same and safely. Neither are touchless.

Yes, but be sure to first completely clean it, and then wipe the coating residue off soon after applying. Maybe 30 seconds or so, to avoid potential streaks.

Same prep for those areas.

You could apply the coating over PPF without any issues. It will increase the hydrophobics and make the PPF even easier to clean.  With regards to the dealer applied product, you could try a strip wash and see if that removes it.  If it were me I would go around the car with a polish and then proceed to the coating.  You will not be removing that much clear doing this.  

I actually a hand foam mitt and some polish. It came right off. 
Thanks all for your help 

This is a classic Can vs. Should. Adding a ceramic coating over anything other than a bare naked surface, including another layer of ceramic coating, will reduce the longevity and effectiveness. Recommend you use something else to polish the surface if you want to use any of the coatings.

Absolutely safe. You can also consider something like Waterless Wash or CS3 for the same purpose.
 
Welcome to the forums! Post an intro so we can welcome you and get to know you...

No, you do not need to discard them, just don't use them on the body of a vehicle.  Use them for engine bay cleaning, the insides of wheels, exhaust pipes or anyplace that is not polished like the body is.

To mark mine for non-body usage, I cut the corners off the towels along with storing them separately to ensure no cross contamination.  Furthermore, since they are non-body towels, I hand wash them since they can get nasty with the areas I use them on.

My recommendation is to maintain as is. When layering ceramic coatings the law of diminishing returns applies. Adding 2+ layers does not equate to 2x+ protection. That said, if you still want to, be sure to completely clean and likely clay it beforehand, apply maybe once a year or so. But I don't see much benefit in doing that.

Welcome to the forums!

E
 
Either, work Graphene Boost higher end. 

More than likely, yes, it's gone. It's extremely short lived but adds incredible shine. Reapply and you'll be shine...er, fine!

Up in Longmont.

In terms of use "every wash" Graphene Detail Spray would be the one to use of those listed. Use Graphene Boost every month or two, it's a more concentrated formula and designed to last longer than the Detail Spray version. The Graphene Ceramic Spray Coating is a true coating and could be applied about once a year with proper prep done beforehand.

Thanks Chris.  I didn't know about this product.  I just ordered a can.  If it gets here by the weekend I may try it first.

It's a limited collaboration. I'll ask our chemist to confirm, but my first thought is it sounds more like CS3 than DS. More to follow...

Hi Tyler,
If your vehicle is not graphene coated, then you should stay with the non-graphene product line   If you have graphene coated, your vehicle, then you should go with graphene products.  
 
Generally, if you are getting streaking it is either too much product being used or the towels are not optimal, ie. too wet, too light weight.   It took me a bit to get to the right combination, and a light spray followed by two separate borderless grey towels, seems to work well for me.   Humidity can also have an effect and if it is above 80%, then I just don't bother touching the vehicles.

Welcome, Mark!

Hand polishing won't remove the coating unless you work at it for a while or go pretty aggressive. That said, it certainly won't hurt to reapply, just in case. Clean and Surface Prep the area again then reapply. You will likely notice it'll come off easier than before, that's because the coating below is "rejecting" the new layer to some extent. Be at least you'll feel more comfortable.

Appreciate it and thankfully hand polishing the high spots and "smudges" a week after coating  worked! What I didn't do was reapply AGC to the areas I polished. I wasn't sure if it was needed since it was hand polished and the areas were still reacting to the UV light the same as the areas I didn't have to hand polish. Should I have reapplied?

Thanks for the quick response. Great product and forum.