Just go for oil and oil filter change. It'll cost you around 7K. Nothing else. No tuning etc.
Don't forget to take along ur surplus 1 litre Taglon bottle. It shud hv 800ml. Ask the mechanic to use this 800 ml completely and save 600ml from the new 4 Ltr Taglon bottle.
They'll clean air filter for free. If you wan to change the air filter at 10K, buy it from a 1S in the market and install urself. Its way easy.
When on the workshop floor having ur car lifted, ask the mechanic to tighten the undercarriage bolts.
Thats all....