A anpconnors Thread starter Joined Dec 27, 2013 Messages 35 Location MI Nov 20, 2015 #41 I would try the 15W40 truck oil before the 10W40 as they report some improvement on the JK forumns, but only in the warm months. I am hoping the oil leaks being fixed will help some.
I would try the 15W40 truck oil before the 10W40 as they report some improvement on the JK forumns, but only in the warm months. I am hoping the oil leaks being fixed will help some.