Which grade oil to use?
I have just imported a Toyota Vitz Sedan 1000cc (1KR Engine) from Japan. It's manual is in Japanese and I can't read it. I wanted to change the engine oil of the car and would appreciate it very much if you could give me your expert opinion on the grade of oil I should use, i.e. 5W40, 10W30, 15W40 etc. The car has done 22,000 kms and I live in a hot climate which averages 30 degrees celcius year round, so cold winter starts are not an issue for my car engine.
Looking forward to your response.
Thanks and regards,