J JeepZJ4.0 Joined Apr 28, 2003 Messages 1,397 Location Katy, Texas Mar 12, 2004 #21 I'm thinking about trying Pennzoil Long Life 15w40. It has a good dose of moly and my 4.0 liked Chevron Supreme but I could use the extra protection.
I'm thinking about trying Pennzoil Long Life 15w40. It has a good dose of moly and my 4.0 liked Chevron Supreme but I could use the extra protection.
C Chris 2421 Joined Nov 17, 2002 Messages 201 Location Northeast Florida, United States Mar 13, 2004 #22 I've been using 15w40 in the wife's 4.0 Cherokee and it has done very well.
