[rkbharat]

This what I thought of. but will wait for him to come back and give some details.

Originally Posted by tsk1979

Last month Delhi has seen lots of dust storms. I had to do a premature cleaning of the air filter with the vacuum cleaner because of this.
It seems that the service was done at 1500kms in March-April timeframe, and then with all the dust storms, the air filter got choked.
The rarefied air at top made the problem worse.