because of the high cost of having the car maintained sa casa, I might have the car serviced sa labas pag 20kms. I'll just consult the manual on what needs to be checked. I just felt taling tali ako sa casa with this warranty thing. My friend told me that it would not void the warranty if i have my change oil, spark plugs, filters outside (yung friend ko nga siya na mismo nag papalit nito e). As long walang gagalawin or babaklasin na parts. I really don't care much if re-sale value dips dahil di casa tuned. Highway robbery talaga sa casa.