I personally recommend the AC of the SAE 40 oil, whether monotgraduate or multigrade, by the mileage and I do not recommend the synthetic oil, of the spark plugs if you want to see you splendid with your car Use some NGK of iridium, those insurance are going to last you from less 25000 km anted to replace them in addition to the fact that they are pre -heal where some specifications come, including the calibration of the spark plugs