Jetboy47 Posted Monday at 07:37 PM Report Share Posted Monday at 07:37 PM Can I please get the correct PTU and RDU fluid type for my 2023 ST. I haven't been able to find them in the owners manual. I've seen different varying types on You-tube videos and and I just want to be clear what are the Ford recommended ones for my particular vehicle. I'd like to know the exact fluids and then maybe get the Amsoil equivalent, or another type if anyone believes there is something better than the Ford recommended type for the PTU, RDU, Transmission & engine oil. 2 Quote Link to comment Share on other sites More sharing options...
Wubster100 Posted Tuesday at 02:07 AM Report Share Posted Tuesday at 02:07 AM (edited) RDU: Motorcraft SAE 75W Disconnect RDU Fluid XY-75W-QL PTU: Motorcraft SAE 75W-85 Premium Synthetic Rear Axle Fluid XY-75W85-QL / WSS-M2C942-A ATF: Motorcraft MERCON ULV Automatic Transmission Fluid XT-12-QULV / WSS-M2C949-A / MERCON ULV Edited Tuesday at 02:08 AM by Wubster100 1 1 Quote Link to comment Share on other sites More sharing options...
STBEAST Posted Tuesday at 01:26 PM Report Share Posted Tuesday at 01:26 PM Wubster100 thank you for the info. I too could not find that in my digital owner's handbook. I did see on some previous threads that there are some possibly better alternatives via Redline or Amsoil. One of the popular ones was Redline Shockproof for the PTU? 1 Quote Link to comment Share on other sites More sharing options...
Jetboy47 Posted Tuesday at 04:39 PM Author Report Share Posted Tuesday at 04:39 PM Thanks Wubster100, much appreciated. I just ordered the Motorcraft RDU fluid. If anyone has any alternative recommendations for the PTU and Transmission fluids I love to hear. 1 Quote Link to comment Share on other sites More sharing options...
fishx65 Posted yesterday at 10:48 AM Report Share Posted yesterday at 10:48 AM On 7/7/2025 at 10:07 PM, Wubster100 said: RDU: Motorcraft SAE 75W Disconnect RDU Fluid XY-75W-QL PTU: Motorcraft SAE 75W-85 Premium Synthetic Rear Axle Fluid XY-75W85-QL / WSS-M2C942-A ATF: Motorcraft MERCON ULV Automatic Transmission Fluid XT-12-QULV / WSS-M2C949-A / MERCON ULV Would you happen to know of a 2022 St-Line's RDU also takes 75W? 1 Quote Link to comment Share on other sites More sharing options...
Wubster100 Posted 21 hours ago Report Share Posted 21 hours ago On 7/7/2025 at 10:07 PM, Wubster100 said: RDU: Motorcraft SAE 75W Disconnect RDU Fluid XY-75W-QL PTU: Motorcraft SAE 75W-85 Premium Synthetic Rear Axle Fluid XY-75W85-QL / WSS-M2C942-A ATF: Motorcraft MERCON ULV Automatic Transmission Fluid XT-12-QULV / WSS-M2C949-A / MERCON ULV This is for all trim levels 2019-2024. Some vehicles are equipped with a PTU cooler. Quote Link to comment Share on other sites More sharing options...
fishx65 Posted 21 hours ago Report Share Posted 21 hours ago 6 minutes ago, Wubster100 said: This is for all trim levels 2019-2024. Some vehicles are equipped with a PTU cooler. Thanks Wub, just ordered me a quart from Amazon. Quote Link to comment Share on other sites More sharing options...
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