Hi all! Have any of you commander owners changed the motor oil over to the synthetic motor oil. I'v use it in all my cars. I can not find any info from jeep or mopar for the use of synthetic oils in there engines. Like to hear from you guys on what you think. Should i switch over to synthetic oil or just leave it alone. I presently have Mopar 5w-20 regular oil in my jeep commander. Get back!