Joel Blake

MDR is a little acidic so it's not wax friendly but won't hurt something like Opti-Coat.

The FerreX odour is far less offensive than others.

Hi Chris I've tested water spots as best I could with the Opti-Coat. In the middle of our summer I took my poor car to the DIY wash a few times a purposely drove off to allow the car to dry in the sun and get some etching. I then left it like that for a few months and the only time I touched it was for a standard hand wash. When I couldn't stand it any more I used a non abrasive polish and by hand removed the water spots. No etching and I was blown away at how easy they came off. Unfortunately regarding the bird bomb etching I haven't been able to test it out for any longer than a couple weeks. The bird poo won't stick any longer than that

Dr Ghodoussi has since answered this for me actually. What happens is the "etching" you see is in fact a stain on the coating. Not etching as the acid doesn't damage the coating. After a few days this stain breaks down in the heat of the sun and disappears.

Certainly not a problem. Quite the opposite! But it has me stumped how.

I've been doing some testing by leaving bird bombs on the paint for extended periods. On more than one occasion it has left some slight etching after a few weeks, but then this etching later disappears. It isn't getting washed off, because I checked the etching after the wash to make sure it was still present. But then by the next wash it has already disappeared. I didn't think too much off it until a client of ours said he experienced the same thing. Anyone got an explanation for this???