Average 18-45 depending if the motor is cold or not, depending what oil weight you use.
5w30
5W30 oil.
5 quarts 5w30
Spring and summer... use 10/ W30. Winter/fall time...use 5w30
If you live in the northern part of the U.S. use 5w30, in the south use 10w30.
The owners manual recommends 5W30. I would stick with that. I have been using Mobile 1 Full Synthetic 5W30 since I purchased the car and it runs great!
10w40 is a thicker oil than 5w30. I would only use 10w40 in an older motor in the summer, if the motor was using too much 10w30. The thinner oil will not have the higher pressure. Pressure that this motor needed.? I would go back to the 10w40 and see if the knocking stops...the damage may already be done.
5w30
5w30.
5W30
5w30
5w30