Thank you guys for the insightful comments! Where do you guys bring your car for tune-ups/change oil? Malaki ba difference ng service? Please post your quotes too para makatulong tayo. Hopefully, this would help those who are newbies like me who will be having their PMS soon. As what the other nice people here suggest, refer to the manual for the corresponding service to be done in a certain mileage. Last na to, matuto na dapat ako. Thanks!