You're welcome. Trusting that you already may have had it washed for a couple of times I truly hope you followed the microfiber cloth suggestion? And another suggestion:
If you can't have it washed at home, there's an easy way about it at the car-wash stations, if you wanna protect your black goodie from scratches, simply : "Pay the guys there Rs. 50 extra per wash and ask them to use your own cloths, hence the MF's.
Find a good car-wash place that understands your concerns and is willing to help. Usually the most busy ones will give heck about this, and you'll see 2 guys by your trunk unfolding a dirty, worn out cloth to be dragged from the trunk, over the top and all the way to the bonnet, in one single move, one guy on each side of the car dragging the cloth forward. I simply call it a dirty "gang-rape", it screws up all cars, especially those in black and causes instant swirls!
So pay them some extra and get it done with a touch of love, so never mind having to buy it. They'll resist initially and say: "Oh, Sir, this cloth doesn't absorb the water". ********! Just tell them to keep moving around the car, by the time they return to starting point, the water will be evaporated, or may at the max need a, quick single swipe again! That's the beauty of MF's ( I mean "Micro-fiber's", nothing else, hahahaha).
Finally, on the interior, my suggestion is to use the spray form foam, just spray and wipe off. Don't use surf cloths! They tend to dry up the interior texture. Use a clean, soft and white cloth for this, since Micro Fiber cloths are usually colored and may cause color stains on the interior when used with the chemicalized spray foam!!
And before I wind up, it should be time by now to know og your CNG economy? nice shots above of the E-bay. May I ask, do they install this kit in vehicles at what price?
Regards.