Thanks Brother for ur valuable suggestions. Yes i start with very light foot and change from first to 2nd gear at 1000 RPM and then at 2000-2300 RPM and max speed at 60-70 KPH in 4th gear and avoid using 5th gear. As told by u i usually hear those sounds from dash board. I will follow ur suggestions Inshallah. No plans of installing mud flaps and CNG.
Only thing i dont understand why these Suzuki people dont change the engine & gear oil at 1000 KM first inspection. I remember when i bought Cultus in April 2010 on 1000 KMs inspection they changed the gear oil, used Zic transmission oil (2 red bottles packing) and engine oil ZIC-A (blue bottle 4 litres 10/40 W) and poured 3.5 litres of 4 litres as Cultus engine capacity is 3.5 litres. After that iam using the same engine oil and change it after 5000 Kms and changed gear oil at 40000 kms and 80000 kms.
I think not changing engine oil and gear oil at 1000 Kms must be damaging for engine and transmission. What u think so ???