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Climbandroll

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Based on some posts in other forums and around the web, I gather that the 5th gen 4WD had 6 zerks (3 front [one slide yoke + two joints], and 3 rear [one slide yoke + 2 joints]).

On my 2025 TRD ORP:

Rear shaft:
I don't see any zerks for the rear slide yoke. It appears to have a boot/sleeve, so seems greasing the rear slide yoke would require removing the boot / dropping the shaft to expose it. I found one zerk per joint at each end of the rear shaft, so seems the rear has 2 total zerks.

2025 4runner 6th gen Drive shaft (propellar shaft) grease zerk fittings - 4WD (TRD ORP) 20250717_130821_001


2025 4runner 6th gen Drive shaft (propellar shaft) grease zerk fittings - 4WD (TRD ORP) 20250717_130833


2025 4runner 6th gen Drive shaft (propellar shaft) grease zerk fittings - 4WD (TRD ORP) 20250717_130914


Front shaft:
There appears to be a zerk for the slide yoke on the front shaft, and one zerk per joint at each end, so 3 total (one slide yoke zerk; two joint zerks).

2025 4runner 6th gen Drive shaft (propellar shaft) grease zerk fittings - 4WD (TRD ORP) 20250717_132302


2025 4runner 6th gen Drive shaft (propellar shaft) grease zerk fittings - 4WD (TRD ORP) 20250717_132824


2025 4runner 6th gen Drive shaft (propellar shaft) grease zerk fittings - 4WD (TRD ORP) 20250717_131044


So that is 5 total zerks (3 front + 2 rear).

At ~7k miles, I'm not in a hurry to grease the slide yokes. The front has the zerk, so easy enough (except my skid plate is in the way). But for the rear slide yoke, the boot would need to be removed to expose it. Also could require dropping the shaft from one end or the other, and marking to ensure it goes back to the same exact alignment from which it came, and it will be messy. I am hopeful (curious) that it was sufficiently lubricated at the factory to wait for me to figure out what I don't know. I also understand that too much grease there can create pressure, so the front slide yoke which is easily done via grease gun on the zerk will only get a 1/2 pump or two.

Anybody else getting into this yet on a 2025 w/ 4WD? What am I missing and/or wrong about?
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Joey_Midnight

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I just got a greese gun for my trailer and i was curious about the fittings under these. Ill have to give it a look but i feel like you got it all. Most cars dont typically have too many fittings on the oem parts
 

cats4lyfe

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Were you able to get this figured out? I just got a 2025 ORP and am wondering the same thing. Never driven a 4x4 before and somewhat intimidated by greasing these myself.
 

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Any conclusion on the number of Zerk fittings? I don't have ramps anymore and may not be able to get under the SR5. Sound's like 2 Zerk's on the rear shaft plus a sealed Slide. Then 3 for the front including the slide yoke - Per original OP's excellent pics and description. Why in the heck would they make the front slide yoke serviceable and the rear sealed?

Its a bit disappointing the rear Slip Yoke seems sealed with clips. I wonder if the slip yoke greasing is in the Toyota service schedule or is it a non-maintenance item and only messed with if the boot is damaged?

I understand from other 4WD vehicles, the slip joint uses a different grease too. On an older Ford super Duty, it uses a special PTFE lightweight grease. Using regular grease can cause issues. Does anyone know what Toyota are recommending for the front slide yoke. Same as the joints or different like some vehicles. I am not willing to touch the front slide yoke until I can find out.

Thanks....
 
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Climbandroll

Climbandroll

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Any conclusion on the number of Zerk fittings? I don't have ramps any more and may not be able to get under the SR5.

Its a bit disappointing the Slip Yoke seems sealed with clips. I wonder if the slip yoke greasing is in the Toyota service schedule or is it what many claim, "sealed"?

Maybe the rear slip joint does not need to be regreased unless the boot is damaged? I understand from other 4WD vehicles, the slip joint uses a different grease too. With paved road only use, maybe its not needed?
Greased rear drive shaft (propellar shaft) joints, front joints, and front slide yoke (zerk fitting exists only for front; no zerk for rear slide yoke as it is booted).

* Front slide yoke: Under pressure so not much needed here and too much is bad. Couple short pumps from mini 3oz gun with general purpose grease. I used the Multi Purpose Lithium Base Lubricating Grease that came with the mini 3 oz grease gun. I gathered mixed info from lubricant specialists as to whether grease for slide yokes should contain molybdenum disulfide. I took away that lubricating it at all is better than never, but too much is bad. I found a custom driveshaft vendor that preferred calcium sulfonate which seems to be suited for applications where potential water exposure exists. Rabbit hole.

Did not grease rear slide yoke (boot covering so must be dropped to service/grease). I may do this later in life.

I used this for the joints:

Valvoline Multi-Vehicle High Temperature Grease
Part No. VV615
extreme pressure / high temperature 0°F to 375°F
NLGI #2 Grade GC-LB Lithium Complex EP
For disc brake wheel bearings, suspension systems, universal joints, steering linkages and chassis.
 

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What kind of grease would you recommend? AMSOIL 100% Synthetic Multi-Purpose Grease??
Repair manual calls for "Lithium base chassis grease NLGI No. 2"
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