My manual said you could use a lithium based NLGI 2 on both.
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Propeller Shaft = Dealer Shaft
- Thread starter tahoekarl
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Jivewalker
Member
Yes, that is correct. Moly-fotified is the first listed for the the slip yokes followed by NLGI2 chassis grease. Somewhere on here someone explains why moly is better on the slips. Something to do with forces. I'm going to edit that post I made since it's not really correct. Thanks!
Dynamo
New member
My understanding is that moly grease is good for where there is friction from sliding forces and not rolling. The slip joint is metal on metal sliding so moly-fortified grease helps there. If used where there are ball or needle bearings they may slide instead of roll and cause them to get flat spots.
On my previous FJ Cruiser I used NLGI2 on the spider yokes and moly-fortified NLGI2 on the slip joint. I would pump grease into the slip joint until it starts moving. No problems in the 143k miles I had it, and I lubed everything at every 5k mile oil change. I will continue that method with my 4Runner. IMO it doesn't matter so much as to which grease you use on the slip joint (moly-fortified or not) as it does making sure it is lubed regularly. I bought 2 grease guns because they were cheap and have both types of grease on hand.
Salvo Jimmy
Member
When you get to 81 years old, like me, you might want to reconsider why it’s so hard.
Jivewalker
Member
2 guns here as well, I use moly on the slips and regular on the spiders.
just use lithium on both! Moly is less likely to leak out of slip yokes vs Lithium. My guess is its environmentally better to have less grease slung on our roads in the long run which is why its recommended for slip yokes.
However using Moly in your spider joints will cause premature wear because of metallic Moly content. Think of teeny tiny metallic balls gnashing between metal and metal and this is why Lithium is recommended for these parts instead.
Why did grease requirements change mid model? Easy. EPA requirements relaxed a bit with the different administration.
GripT4R
Banned
Piss poor excuse.
DougR
Member
My dealer offers drive shaft lubrication only if I choose scheduled maintenance for a TRUCK, which costs an extra $100. Most service writers think of the 4Runner as a CAR and don't realize the driveshaft has grease fittings. I lube it myself.
I use the same grease for slip yokes. After many times of greasing it, there is a potential of over-greasing and locking up the joint, so bench greasing yokes is the best method. I think the next time I grease it, I'll remove the zerk, wrap the shaft in aluminum foil and drive over tall speed bumps and deep dips on a nearby street. I'll post what happens here. This "test" probably won't prove anything. I think there must be an air space in the slip joint, hence the grease I just put in will be pushed out. If I give it a couple extra shots of grease, then some grease has to reach the splines.
Has anybody ever greased the slip joint until grease oozed past the seal? I think that would result in a hydro locked joint.
This video, YouTube shows grease slung from a FJC slip joint. Fast forward to time 3:33. Obviously, it was over-greased, with no apparent damage to the joint or seal.
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Same.
If you take the driveshaft out and slide the slip-joint apart, make sure you mark both parts first with paint, so it goes back together in exactly the same place. Otherwise you're likely to have vibrations from the driveshaft.
Dynamo
New member
Yes, many times with my previous '13 FJ Cruiser. No hydro lock and no harm other than a grease stripe from flung excess grease. I always pumped grease into the slip joint until it moved. 143k miles and no problems.
