PTU Fluid change - friction modifiers or additives to add?

[BeardedMarine]

Are there any friction modifiers or additives that needs to be added to the SAE 75w-85 when a fluid change is performed on the PTU?

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[Snox801]

Nope not to the ptu.

 

[Snox801]

The rdu yes depending on the fluid used.

 

[BeardedMarine]

The rdu yes depending on the fluid used.

I'm doing the RDU also, I'm using motorcraft SAE 75w disconnect rear drive unit fluid.

 

[Montana]

Nope. No modifiers.

 

[BeardedMarine]

Thanks for the replies

 

[Richard2212]

I'm doing the RDU also, I'm using motorcraft SAE 75w disconnect rear drive unit fluid.

I change all (Engine/Filter,Trans,PTU,RA) fluid once a year in my 2020 Fusion AWD. (My PTU calls for Motorcraft 75w140 Full Synthetic.) I drive the Fusion 5000 miles per year -$200. Matl and I do it at home.

 

[BeardedMarine]

Got the fluids all changed. I don't know how you guys fill these things while on the ground. Not much room. We ended up using a power steering fluid transfer pump on mine while on a lift.

 

[Richard2212]

Got the fluids all changed. I don't know how you guys fill these things while on the ground. Not much room. We ended up using a power steering fluid transfer pump on mine while on a lift.

I have a floor jack and jack stands(always leave jack in place and double up on the jack stands). I raise the front with tire about 2" off my garage floor. Do the same at the rear.
I made cut outs in the front belly shield for the Oil Filter, Engine oil drain plug, Trans Drain Plug, PTU drain plug and fill plugs. I have a fill pump for the Rear Axle and PTU that attaches directly to the Motorcraft container.
If this 89 yo car owner can do it so can you. 2 hours and $200. at home. Dealer cost in then order of $800.

 

[BeardedMarine]

I have a floor jack and jack stands(always leave jack in place and double up on the jack stands). I raise the front with tire about 2" off my garage floor. Do the same at the rear.
I made cut outs in the front belly shield for the Oil Filter, Engine oil drain plug, Trans Drain Plug, PTU drain plug and fill plugs. I have a fill pump for the Rear Axle and PTU that attaches directly to the Motorcraft container.
If this 89 yo car owner can do it so can you. 2 hours and $200. at home. Dealer cost in then order of $800.

Oh I could do it on the floor if I had to, but why if you have access to a lift.

 

[Richard2212]

Oh I could do it on the floor if I had to, but why if you have access to a lift.

I would prefer to use a lift. But I don't had a lift at home. The lift I could use is 30 minutes away.
It's more convenient to do it home as I can do other things - cut grass,etc as I wish.

 

[James K]

I have a floor jack and jack stands(always leave jack in place and double up on the jack stands). I raise the front with tire about 2" off my garage floor. Do the same at the rear.
I made cut outs in the front belly shield for the Oil Filter, Engine oil drain plug, Trans Drain Plug, PTU drain plug and fill plugs. I have a fill pump for the Rear Axle and PTU that attaches directly to the Motorcraft container.
If this 89 yo car owner can do it so can you. 2 hours and $200. at home. Dealer cost in then order of $800.

You should be proud of that Richard. This 68-year-old with a lift grumbles at the thought of doing this job.

 

[ndmiller]

read the manual

 

[Tim d]

Are there any friction modifiers or additives that needs to be added to the SAE 75w-85 when a fluid change is performed on the PTU?

I'm too lazy to read my manual LOL. How often does Ford recommend changing this fluid?

 

[BeardedMarine]

I'm too lazy to read my manual LOL. How often does Ford recommend changing this fluid?

I don't know, others have said theirs was low from the factory so I just changed them. I'm ocd about maintenance though.

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