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Strut mount grease? #4802796
07/01/18 11:31 PM
07/01/18 11:31 PM
Joined: Aug 2015
Posts: 18
Texas
beavis87 Offline OP
beavis87  Offline OP
Joined: Aug 2015
Posts: 18
Texas
Have a 2010 Mazda3, equivalent of a Japanese Ford Focus and the car has strut bearings. Replaced the original ones last year, about 130k miles. Front left completely shot, pieces falling off (its made out of plastic), ball bearings missing and completely dry. Replaced both fronts with Moogs, because they were cheaper and thought Moog is better than other aftermarket suspension brands, before installing them I opened them up and saw that they could use more grease so I packed some more in with this grease I had on hand.

[img]https://contentinfo.autozone.com/znetcs/product-info/en/US/vlo/VV614/image/4/[/img]

Seemed to fix the noise issue for about 6 months but the noise is back. Decided to get OEM strut mounts but am wondering if me adding more grease to the Moog ones had a negative effect and whether I should do it to OEM strut bearings. Should I just leave them be or is there a 'best' grease for packing strut bearings?

Re: Strut mount grease? [Re: beavis87] #4802832
07/02/18 04:21 AM
07/02/18 04:21 AM
Joined: May 2005
Posts: 10,470
ROCHESTER, NY
Char Baby Offline
Char Baby  Offline
Joined: May 2005
Posts: 10,470
ROCHESTER, NY
I was waiting for what others might have to say but, no one is replying. Here's my take on this.

Putting grease in the strut mount "probably" isn't a bad idea however, putting in the correct grease is more important. IDK what type of grease the manufacture of the strut mount slaps in there. But, what I am thinking is that the grease that they use is most likely a silicone type(or synthetic) and not petroleum based. Petroleum deteriorates rubber and this may be part of your problem with the strut mount(s) falling apart.

And though we're speaking about strut mounts and not brakes, this is one reason that it's best to use a silicone brake lube on brake caliper sliders etc., so the rubber boots don't disintegrate/fall apart ...IDK, just saying!


Good luck,

CB

EDIT:
Also, over tightening the mount(top bolt) to the strut could also be another issue you're having with the mount falling apart. Tighten but not over tighten! smile

Last edited by Char Baby; 07/02/18 04:30 AM.

"Retired"
-----------------------------------

'80 Firebird FORMULA V8/4bbl-purchased "NEW"
'15 Nissan Altima 2.5 SV
'15 Honda Civic LX
Re: Strut mount grease? [Re: beavis87] #4802843
07/02/18 04:54 AM
07/02/18 04:54 AM
Joined: Nov 2006
Posts: 20,328
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,328
MA, Mittelfranken.de
You did nothing wrong except for using garbage parts, as long as you didn't forget a seal or spacer (if used when you put it back together. Those are 2 piece bearing shells and the grease you used is fine, they are a low speed high load ball bearing.
Get OE mounts and assemble as they come unless otherwise specified by the FSM, the originals went 130K the new ones will too.

2cents


ASE L1, Master. Deutsch Meisterbrief.
Re: Strut mount grease? [Re: beavis87] #4802860
07/02/18 05:27 AM
07/02/18 05:27 AM
Joined: Feb 2009
Posts: 17,253
Michigan
daves87rs Offline
daves87rs  Offline
Joined: Feb 2009
Posts: 17,253
Michigan
Agree....bought the wrong brand of parts...


Moog is just coasting on the name now....most of it is garbage.....


Coming together is a beginning; keeping together is progress; working together is success.

Henry Ford
Re: Strut mount grease? [Re: daves87rs] #4803208
07/02/18 12:46 PM
07/02/18 12:46 PM
Joined: Nov 2006
Posts: 20,328
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,328
MA, Mittelfranken.de
Moog was one of the best in the business, now they rebox some real tat for all over the third world.
I got some bushings last month that were so poor I wouldn't even put them on a car, instead I ordered some poly made by a South African family company PSB and some from Power Flex.

The Power Flex VW strut mounts are the bar non and PSB make a nice rear carrier bushing, that has a good precision fit.

https://psbushings.com/

https://powerflexusa.com/


ASE L1, Master. Deutsch Meisterbrief.
Re: Strut mount grease? [Re: beavis87] #4810887
07/11/18 12:37 AM
07/11/18 12:37 AM
Joined: Aug 2015
Posts: 18
Texas
beavis87 Offline OP
beavis87  Offline OP
Joined: Aug 2015
Posts: 18
Texas
So when shopping for a grease for repacking strut bearings what kinds of grease and kinds of test numbers should I be paying attention to? I figured extreme pressure greases because struts can be submitted to high load conditions, like on bad roads with lots of potholes but also low-speed torque like when turning the wheel left or right.

Re: Strut mount grease? [Re: beavis87] #4811073
07/11/18 08:06 AM
07/11/18 08:06 AM
Joined: Nov 2006
Posts: 20,328
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,328
MA, Mittelfranken.de
For that particular type of bearing (very low speed, high load) I would use a 5% moly grease like Schaeffer 238.


ASE L1, Master. Deutsch Meisterbrief.
Re: Strut mount grease? [Re: beavis87] #4813437
07/13/18 05:50 PM
07/13/18 05:50 PM
Joined: Jul 2005
Posts: 130
Brighton MI,
Rudy1999 250 Offline
Rudy1999 250  Offline
Joined: Jul 2005
Posts: 130
Brighton MI,
OR for a high load and slow speed you can have great luck with a Texas Refinery (TRC)

880 Crown and chassis with MOLY

There is none better.


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