The trick is to get your required jobs done. If you tell them 40,000 or 80,000 check up then they would ask you change everything. I told them to do the break service, tighten the undercarriage bolts and check suspension, drive belts, fluid levels, condition etc. Since the car is running on CNG from 32,000 kms onwards I told them not to do any tuning. Engine Oil and filter I get them replaced from outside (as no big job that requires special tools). Tuning: My car never needed it so far. Since day one I have not let them fiddle with it as it is giving 14km/lit in city and 17-19 on highway and 235-250kms on CNG.
Job done today:
All bolts undercarriage were tightened, suspension checked. (did not charge anything and I paid just 600 rs for full break service and rest of the jobs were not charged)
They showed me the front disc pads and said that those would be good for another 5,000 or more but I told them to put new ones. Cost 4,200 rupees.
Then they checked the belts and showed me the cracks have started appearing on the inner side of alternator belt. They said that it would be working well for a long time, but you never know. So I also got it changed and it cost just 780 rupees.
Balancing, alignment I get from outside.
I heard the svc guy telling another customer that 40,000 km interval for replacement of all fluids was due to hard driving and road conditions and weather in Pakistan. When the customer said that it is not written in manual, he said that manual is for "ideal conditions."
I checked the manual and it says that gear oil should be changed if the car toes a trailer of camper or is driven very slow in lower gears (by police patrol etc).