Salam. I have purchased Suzuki Cultus 07 Carby model. The car is above 1 lac but the meter says 68k. The engine is fine. No major work required on it. I will only change all the oils, spark plugs and clean the radiator.
I have drived it for a week and I think the engine has not a great fuel average. Should I change the air and fuel filters for this purpose?
I also need to ask that which engine oil will be best for my car in winter and in summer.
I am really confused. Some guys say to use 20w50 as the engine is old while some suggest 10w40.
Please suggest me the best engine oil.