|
Re: 4.2L Fouls Spark Plugs
Personally I think that may be too heavy for a break in oil, I wouldn't go heavier than a 10W40 on a new engine, what does Jeep recommend? Login to read more. ![]()
iATN Members:
Login to read this message and participate Auto Repair Pros: Join iATN to read this message and others Vehicle Owners: Find a nearby iATN member to repair your vehicle |
Copyright ©1995-2026 iATN. All rights reserved.
iATN® is a registered trademark of the International Automotive Technicians Network.
iATN® is a registered trademark of the International Automotive Technicians Network.
