Stellantis MS-A0921

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Aug 30, 2004
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4D806B86-34FE-48B6-99EE-53703D716F08.jpeg

I ordered PUP 0W-40 for the break-in oil change on my buddy’s Ram 6.4. The back label references an unfamiliar spec: MS-A0921. This bottle is the latest API SP formulation.

Prior versions of this oil referenced a MS-12633 spec.

Does anyone know what changed?
 

4WD

Joined
Sep 21, 2010
Messages
18,237
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Texas
I stopped worrying about FCA oil specs when Mobil 1 was FF in the Viper …
and the next day not good enough for the 200 sedan … I have more respect for Dexos …
3rd jug of M1 in my Jeep now … but do have some RGT and VME to use up in the lineup …
 
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Joined
Nov 27, 2018
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CA
They include the hemi-tick in the owners manual? LOL

Funny how the Toyota tick is business as usual and the hemi tick is a big deal.
 
Joined
Oct 30, 2002
Messages
41,240
Location
Great Lakes
it’s literally just the SP revision of the same old oil.
You're right. This is what SOPUS replied with:
Pennzoil said:
Chrysler MS-12633 standards are aligned with meeting the old API SN & ILSAC GF-5 specifications.

The current Chrysler MS-A0921 standards meet the latest API SP & ILSAC GF-6 specifications, which is now found on our updated labels as our products meet the current GF-6 specifications.
 
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