I’m not sure which engine coolant I should use. The cap on my coolant tank reads MS-12106 but the manual has MS-90032 (orange). I went out and bought Prestone Orange (MS-12106), is it safe to use?
YES! The MS-90032 coolant number has been replaced with the MS-12106. So even if you go to the dealership they will sell you the MS-12106 coolant as they do not have MS-90032. Coolant Part# 68163849AB
The Auto Repair Manual States to use MS-12106 as well.
MOPAR Antifreeze/Coolant 10 Year/150,000 Mile Formula OAT (Organic Additive Technology) or equivalent meeting the requirements of Chrysler Material Standard MS-12106.
Source: Mitchell1 Auto Repair Manuals
Source: www.wranglerforum.com