I have an older Mazda 3 with a 2.0 Skyactiv engine. The OCI in Canada is 8,000 km with 0W20. I will use the cheapest 0W20, so most likely Castrol from Costco.
Is there any issue with extending the OCI to 10,000 km?
Is 0W20 a good grade for these engines or do they like 5W30 better?
Is there any issue with extending the OCI to 10,000 km?
Is 0W20 a good grade for these engines or do they like 5W30 better?