Newbie here.
I got a question for oil geeks.
I've done some research. Ford's oil specs of WSS-M2C-945A/B1 are for 5W-20 oil. Ford's oil specs of WSS-M2C-947A/B1 are for OW-20 oil.
You can Google up the engineering documents for those specs. 2 Separate different sources list the WSS-M2C-947A/B1 as outdated and both were superseded by the WSS-M2C-945A/B1 specifications.
In the past I've seen Mobil1 OW-20 jugs displaying the WSS-M2C-945B1 spec.
If the WSS-M2C-947A/B1 specs both got superseded why then is it used everywhere? Ford just now seems to be finally updating owners manuals approving OW-20 oil where a 5W-20 is the normal. Suggesting it's use in extreme cold weather for start up.
From what I see the spec for WSS-M2C-945A/B1 for 5W-20 oil are old also and just recently replaced by WSS-M2C-960A1. WSS M2C-962A1 for OW-20 oils.
The way I read it , if the 947A1/B1 specs were superseded then any OW-20 oil that met the 947A/B1 specs is completely acceptable for 5W-20 specs.
I've owned multiple Fords. Newest in the stable is a 2020 Ford Ecosport. Been using OW-20 for years in all of them including the newest vehicle.
I have two other vehicles in the fleet also one of them is a Nissan Altima the other one is a Subaru Forester. Both of those vehicles spec 0W-20 oil.
I got a question for oil geeks.
I've done some research. Ford's oil specs of WSS-M2C-945A/B1 are for 5W-20 oil. Ford's oil specs of WSS-M2C-947A/B1 are for OW-20 oil.
You can Google up the engineering documents for those specs. 2 Separate different sources list the WSS-M2C-947A/B1 as outdated and both were superseded by the WSS-M2C-945A/B1 specifications.
In the past I've seen Mobil1 OW-20 jugs displaying the WSS-M2C-945B1 spec.
If the WSS-M2C-947A/B1 specs both got superseded why then is it used everywhere? Ford just now seems to be finally updating owners manuals approving OW-20 oil where a 5W-20 is the normal. Suggesting it's use in extreme cold weather for start up.
From what I see the spec for WSS-M2C-945A/B1 for 5W-20 oil are old also and just recently replaced by WSS-M2C-960A1. WSS M2C-962A1 for OW-20 oils.
The way I read it , if the 947A1/B1 specs were superseded then any OW-20 oil that met the 947A/B1 specs is completely acceptable for 5W-20 specs.
I've owned multiple Fords. Newest in the stable is a 2020 Ford Ecosport. Been using OW-20 for years in all of them including the newest vehicle.
I have two other vehicles in the fleet also one of them is a Nissan Altima the other one is a Subaru Forester. Both of those vehicles spec 0W-20 oil.