Attention: TDR Forum Junkies Ditch the Castrol oil - at 20 cSt at 100 C it is no longer a 40 wt oil (SAE spec for a 40 wt is 12. 5 to 16. 2 cSt @ 100 C) You are at the high end of a 50 wt. (16. 3-21. 8)
Running a heavier oil could be causing higher oil retetion in the upper end of the motor or not lubricating as effectively as a 40 wt.
Use some Delo, Rotella, Delvac 15W40.
Running a heavier oil could be causing higher oil retetion in the upper end of the motor or not lubricating as effectively as a 40 wt.
Use some Delo, Rotella, Delvac 15W40.
