- Joined
- Apr 2, 2021
- Messages
- 31
My truck has 60 k miles. I just noticed for the first time a 2 second engine rattle on a cold startup only when the outside temp is below 20 f. Currently using Max life HM 5w30. Prior to max life it has been either 0w20 or 5w30 supertech full synthetic. Is it the oil or engine design? I read many other posts with a similar noise but no reference to the oil being the issue.