Ramboy13
Ram Guru
This is from the Pennzoil website:
www.pennzoil.com
Note the 0W-40 calls out Chrysler "MS-A0921 (SRT)". As far as I can find, this is the only mention of SRT on the Pennzoil website. This is THE oil made by Pennzoil that meets Mopar specs for the Hurricane.

From the 2025 Ram 1500 Manual:


Pennzoil Ultra Platinum™ Full Synthetic Motor Oil | Pennzoil®
Our superior full Synthetic motor oil keeps pistons up to 65% cleaner than required by the industry standard. Buy 0W20, 0W40, 10W30, 5W20 and 5W30 viscosity.
Note the 0W-40 calls out Chrysler "MS-A0921 (SRT)". As far as I can find, this is the only mention of SRT on the Pennzoil website. This is THE oil made by Pennzoil that meets Mopar specs for the Hurricane.

From the 2025 Ram 1500 Manual:
