The brand is not known to me, but it will work. Motul sure is expensive but it is more sticky and lasts long. 3M, Rolon and TVS chain cleaner and lube are other options you can try. All are good with little price difference.
No cleaning and maintaining the chain will not impact the warranty in any way. It is recommended to clean and lube the chain regularly to increase its life.
The brown patches are the rust patches, it happens when the chain is not lubricated. Happens more during rainy season, as the lube gets washed away quickly and the water starts corrosive action on metal. Clean and lube the chain regularly to prevent this. There are lots of opinions on how often should you clean and lube your chain. Some do it after every 500 kms, some say it should be done after every 700-1000 kms. I just check the chain when I clean the bike(sundays), if it looks dirty or dry; I clean it and lube it, no matter how many kms it had done. Usually you have to clean and lube the chain more in rainy season because the water washes the lube and dirt and mud sticks to the chain. Hope this helps brother. Ride safe.


. He will clean it by applying diesel using brush then a high pressure wash.

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