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#4806460 - 07/06/18 06:31 AM Greasing Chassis
Phishin Offline


Registered: 05/01/12
Posts: 2458
Loc: Indiana
Car in question is my 2018 Chevy Silverado 3500HD.

I get a couple of free oil changes at the dealership, so yesterday I had the oil changed for the first time in my new truck. I asked about chassis grease and the service manager said:

"You don't want to add grease until the rubber boot is deflated, otherwise you will rupture it"

I'll be the first to admit, I'm inexperienced at hitting ball joints, tie rod ends, and other zerks with a grease gun. But it's my understanding is that you squeeze fresh grease through the zerk until you see it push out the other side of joint? Is that not the case?

Of course, I could see a bozo pumping the snot out of a grease gun and blowing out the seal.

And one last question, what happens to the grease over time? Does it slowly seep out of the junctions and fall away?
_________________________
2018 Chevy Silerado 3500HD 6.0L Gas: Undecided
2010 Accord-LX K24: VSP 0w20/MaxLife 10w30 + LG BioTech HD
2014 CR-V LX K24: M1 0w30

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#4806470 - 07/06/18 06:53 AM Re: Greasing Chassis [Re: Phishin]
Char Baby Offline


Registered: 05/25/05
Posts: 10067
Loc: ROCHESTER, NY
I'm with you. I like greasing my suspension parts until I can watch the boot filling up with grease. If some grease spewed out, not biggie!

Where does the grease go? I think that over time with suspension movement up & down, side to side, that the grease works it way out little by little and can ultimately start to dry up if not replenished regularly.
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#4806472 - 07/06/18 06:55 AM Re: Greasing Chassis [Re: Phishin]
dlundblad Offline


Registered: 09/30/13
Posts: 10170
Loc: Indiana
The word deflated may be the wrong word choice since you don't want to run it to the point of it needing grease, but yes you could overfill something and cause a boot to tear.

Does the manual say how often to grease everything? Is there a way for you to grease it by feel? Maybe 1 or 2 full pumps and call it good?
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#4806484 - 07/06/18 07:11 AM Re: Greasing Chassis [Re: Phishin]
demarpaint Offline


Registered: 07/03/05
Posts: 29974
Loc: NY
I watch for it to start to swell or feel it swell then stop. If a tiny bit oozes out between the bottom of the boot and where the boot sits no big deal. People have a tendency to pump like mad until it is forced out, and usually end up splitting the boot. I've seen some shops use air grease guns and fill it until it is forced out. One guy I knew didn't wipe the zerk fittings off before greasing the cars, forcing dirt into the joint, not good! I guess time is money and the faster the grease goes in the faster the vehicle is off the lift.

My van is the only vehicle I currently own with grease fittings. I grease it twice a year, not based on miles. I do it in the early spring, and the late fall before the first snow fall. That schedule has served me well. Many people grease their vehicles when they change the oil.
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#4806485 - 07/06/18 07:11 AM Re: Greasing Chassis [Re: Phishin]
Chris142 Online   content


Registered: 06/05/03
Posts: 16946
Loc: Deplorable in apple valley, ca
I grease mine and customers till I see the boot move. Not squirt out. I guess the old grease comes out of the boot and that's why things are so greasy down there.
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#4806493 - 07/06/18 07:21 AM Re: Greasing Chassis [Re: Phishin]
Trav Offline


Registered: 11/20/06
Posts: 19280
Loc: MA, Mittelfranken.de
Fill them till they just swell a little thats it. Some of the new boots are using Euro style spring retainers to help prevent grease loss, the problem is this style of retainers was meant for LFL joints so yes they can burst easier than old school open end boots.
Try Schaeffers 238, it is a high 5% moly greaae and stays in the joint a long time. Invest in a good grease gun if you don't own one and do your own grease jobs.

https://www.amazon.com/Schaeffer-Manufac...=schaeffers+238
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#4806497 - 07/06/18 07:29 AM Re: Greasing Chassis [Re: Phishin]
bugeye Offline


Registered: 04/10/15
Posts: 79
Loc: Pennsylvania
Pump a little grease onto a paper towel. Not much is expended with each pump. On open joints on my tractor, I pump grease until the old dirty grease is expelled. On "sealed" boot type joints, I carefully watch, feel that some grease is filling the boot.

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#4806517 - 07/06/18 07:51 AM Re: Greasing Chassis [Re: Phishin]
Snagglefoot Offline


Registered: 12/31/17
Posts: 1905
Loc: SE British Columbia, Canada
I grease once a year on my 2008 3/4 ton Chev. I find I never have to pump more than 3 times on the full size lever type gun. I look to see that the boot swells a bit and normally donít try to get grease to ooze out but donít worry if it does.

Iíll edit this based on Mastersolenoidís comments. This is a rubber boot that will let grease escape, but the boot normally gets quite plump before it starts to escape.



Edited by Snagglefoot (07/06/18 08:13 AM)

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#4806530 - 07/06/18 08:06 AM Re: Greasing Chassis [Re: Snagglefoot]
MasterSolenoid Offline


Registered: 09/26/17
Posts: 173
Loc: One Step Beyond
Pump a little grease onto a paper towel. Not much is expended with each pump. On open joints on my tractor, I pump grease until the old dirty grease is expelled. On "sealed" boot type joints, I carefully watch, feel that some grease is filling the boot.

I think this explains some of the confusion.
Some joints have either:
1) Plastic Cover
2) Rubber Boot that allowed grease to come out / new grease would push out water
3) Sealed Rubber Boot that would require occasional greasing / that you could rupture
4) Sealed Rubber Boot with NO Zerk Fitting

Correct me if I'm wrong, but greasing would depend on the type of Boot Cover.


Edited by MasterSolenoid (07/06/18 08:09 AM)

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#4806642 - 07/06/18 09:52 AM Re: Greasing Chassis [Re: Phishin]
nobb Offline


Registered: 01/29/12
Posts: 249
Loc: Canada
All the greaseable joints I've seen had boots that have a grease relief. I always just pump slowly until the grease oozes out. Why would they design greaseable boots with no relief?

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#4806669 - 07/06/18 10:28 AM Re: Greasing Chassis [Re: Phishin]
WyrTwister Offline


Registered: 01/13/13
Posts: 1584
Loc: Texas
I do not like the suspension parts that are not greasable . But if that is the way they come from the factory , not much you can do .

I certainly am not going to swap them out for parts that have grease zerts . Wait until they wear out , then replace them .
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#4806671 - 07/06/18 10:31 AM Re: Greasing Chassis [Re: WyrTwister]
kschachn Offline


Registered: 12/26/05
Posts: 9504
Loc: Upper Midwest
Originally Posted By: WyrTwister
I do not like the suspension parts that are not greasable . But if that is the way they come from the factory , not much you can do.

Interesting, I don't like the ones that are. The greaseable ones I've bought in the past have worn out much faster than the non-greaseable ones (especially Moog). Maybe they have improved since I last tried them but I find them inferior.
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1994 BMW 530i, 227K
1996 Honda Accord, 262K
1999 Toyota Sienna, 397K
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#4806674 - 07/06/18 10:33 AM Re: Greasing Chassis [Re: Phishin]
WyrTwister Offline


Registered: 01/13/13
Posts: 1584
Loc: Texas
Did you grease them ?
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Wyr
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#4806679 - 07/06/18 10:37 AM Re: Greasing Chassis [Re: WyrTwister]
kschachn Offline


Registered: 12/26/05
Posts: 9504
Loc: Upper Midwest
Originally Posted By: WyrTwister
Did you grease them ?

Oh yeah, absolutely. I do all my own maintenance and have a couple of grease guns.

I remember thinking at the time it sounded like a good idea to be able to grease them but for whatever reason it just didn't work out for my cars. It was only on my Asian vehicles, the BMW doesn't have any greaseable parts even in the aftermarket.
_________________________
1994 BMW 530i, 227K
1996 Honda Accord, 262K
1999 Toyota Sienna, 397K
2000 Toyota ECHO, 267K

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#4806887 - 07/06/18 03:06 PM Re: Greasing Chassis [Re: kschachn]
maxdustington Offline


Registered: 01/21/17
Posts: 843
Loc: Toronna
Originally Posted By: kschachn
Originally Posted By: WyrTwister
I do not like the suspension parts that are not greasable . But if that is the way they come from the factory , not much you can do.

Interesting, I don't like the ones that are. The greaseable ones I've bought in the past have worn out much faster than the non-greaseable ones (especially Moog). Maybe they have improved since I last tried them but I find them inferior.

Because they are not as durable as sealed, that's why they are not used anymore. Moog sucks.

I was looking at cars on kijiji last night and one had a pic of the front clip off and a bunch of moog boxes. I actually cringed.
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