Please 1. Change engine oil at 1500kms, diesel gaadi hai also do use same drain bolt washer forever, yeh jeniyan hai 2. Oil filter at every second oil change, 3. Diesel/Fuel filter every 3,000kms. or every second oil change as advised above, again diesel gaadi hai, pump kharba ho jaye ga 4. Never change air filter since it is jeniyaan, market main jeniyaan nahin milta 4. Never change differential ayal, it is jeniyaan too, if you change it your hissa will start producing awaz, 5. Add tap water in radiator upto "B" mark since "F" is for fools, 6. Remove thermostat, japani pagal hain, pata nahin garm mulkon main thermos vall kyn lagate hain 7. Never change gear oil, read recommendation in 4 above, 8. Always heat your engine by idling for about 30 minutes in the morning and rev your engine to red line when stopping always. This will lubricate your engine better. 9. Aur han brake ayal bhi kabhi tabdeel nahin karna, yeh bhi jenyan hai
The above are some of the recommendations which right now come into my mind. I will share some other useful tips too if I remember.