Hi,
This is the second oil change on a 2019 titan xd with the Cummins isv.5.0. Initial oil change was at 5k before delivery, I than changed oil at 10k and pulled a sample. Oil in crank case is delvac 10w30. Thoughts? Seems like the 10w30 is thinning out pretty good, should I go up to 5w40. Factory recommendations are 10w30 year round and 5w50 cold up to 68 farenheit
This is the second oil change on a 2019 titan xd with the Cummins isv.5.0. Initial oil change was at 5k before delivery, I than changed oil at 10k and pulled a sample. Oil in crank case is delvac 10w30. Thoughts? Seems like the 10w30 is thinning out pretty good, should I go up to 5w40. Factory recommendations are 10w30 year round and 5w50 cold up to 68 farenheit