- Joined
- Jun 29, 2021
- Messages
- 60
Hi I have a bunch of these two oils Pennzoil 0w-40 Ultra Classic and 0w-40 Ultra Platinum, both are API SN and have a Chrysler MS-12633 specification and are marketed for SRT motors. I want to find out how to figure out if either of these oils have friction modifiers. I emailed Pennzoil and I haven't heard back.