I just bought an '89 Nissan Sentra and I'm in the process of changing the oil but have no manual for it and no matter how hard I look on the internet I cannot find what type of oil it uses. I'm sure it's either 5w30 or 10w30 but could someone clarify this. Thanks

I just bought an '89 Nissan Sentra and I'm in the process of changing the oil but have no manual for it and no matter how hard I look on the internet I cannot find what type of oil it uses. I'm sure it's either 5w30 or 10w30 but could someone clarify this. Thanks

Well it should be 5W30, but where do you live and how many miles are on the motor. These factors can play a part in determining what kind of oil to use.

seeing as it's an '89, I'd use Valvoline 10w-30.