Waterproof greases?

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So considering various greases and their water resistant properties. Generally speaking and also in regards to use in PU bushings. I've used Valvoline red grease in the past with poor results. More recently I'm been using Super-Lube with OK results. I like the fact that the Super-Lube should have zero effect on the PU material... but not sure how much that matters since its supposed to be petroleum resistant to start.

In any case, re-lube interval is rather low, and must be done after any rain storm or squeaking will result. If I were to add lift shackles in my DD truck, they would have a PU bushing on one end and I would have to absolutely minimize lube frequency.

Looked up specs on 10 different grease which claim to offer waterproof or highly water resistant properties. Super-lube is rated #2 on my list with an ASTM D1264 of
Obviously trying to avoid anything too boutique, lets say less than or equal to the MSRP of a 14oz cartridge of Super-Lube as a base line. Is there any better grease out there than Super-Lube for PU bushings? Anything with a D1264 score better than 0.90%?


Code:
Name Water Wash out ASTM Thickener Source

Super Lube Multi Purpose Grease /www.super-lube.com/files/pdfs/Technical_Bulletin_Multi_Purpose_Grease.pdf

CRC Sta-Lube Marine 5.00% u/a Aluminum Complex http://api.crcindustries.com/auto-services/get-pds/SL3120

Mystic JT-6 Marine 0.90% D1264 Anhydrous Calcium http://docs.mystiklubes.com/msds_pi/M20086.pdf

Lucas Marine /lucasoil.com/pdf/TDS_Marine_Grease.pdf

Lucas X-tra Heavy duty 10.00% D1264 Polyurea https://lucasoil.com/pdf/TDS_XtraHDGrease.pdf

Green Grease u/a n/a Mixed Complex http://www.greengrease.net/PDF/GreenGease.pdf

Amsoil Synthetic Water Resistant Grease 1.25 D1264 Calcium-Sulfante http://www.amsoil.com/lit/databulletins/g1281.pdf

Amsoil Synthetic Polymeric Off-Road 1 D1264 Calcium-Sulfonate Complex http://www.amsoil.com/lit/databulletins/g2698.pdf

Amsoil Synthetic Polymeric Truck, Chassis, Equipment 3 D1264 Lithium Complex http://www.amsoil.com/lit/databulletins/g2762.pdf

Amsoil Synthetic Multi Purpose 1.7 D1264 Calcium-Sulfonate Complex http://www.amsoil.com/lit/databulletins/g1279.pdf
 
Originally Posted By: doitmyself
Why not silicone?


Not aware of any reasonably priced options that com in either 3oz or 14oz cartridges?
 
Lucas marine and Green grease are both lithium complex, easy to find and and reasonably priced. I have used them both and would go with either one. Green Grease is the stickiest, clingiest and tackiest grease I have ever used. It is also very long lasting and makes things operate very smooth. Green grease comes in 3 and 14 oz tubes at autozone, advance auto and a few other places.

Lucas marine grease is good too but it has more of a smooth, waxy texture that seals out water. However, Lucas marine bleeds out of the grease gun pretty badly where the bleeding is very minimal with green grease.
 
For me is not clear what do you want.
Water resistant grease or grease that withstands spray offs.
They are two different types of greases – e.g.
1. steel and paper mill greases has excellent resistance to sprayoffs,
2. marine grease works excellent with presence of water. Than marine greases are devided to two
a. types that absorb water – E.g. Calcium based
b. greases that repels water. – e.g Aluminium/Barium based
 
Calcium based grease.
smile.gif
 
For water resistance I like Bentonite based greases. I have one that sticks like crazy and does not mix at all with water.
 
Amsoil synthetic water resistant has worked well for me in trailer bearings that are often in saltwater.
 
Originally Posted By: widman
For water resistance I like Bentonite based greases. I have one that sticks like crazy and does not mix at all with water.


I do too. and if you get a bentionite grease with a PAO base you won't get any rubber swelling on top + excellent high temperature stability.
 
The D1264 water washout has the options of running at 38C and 79C (100F and 174F). The greases with the higher loses are run at 79C according to their PDS's. The greases with the low loses are either run at 38C or their temps are not specified on their PDS's. With such low loses the lower temp is assumed. The comparisons are not really direct.
 
Bentonite (clay) mixes well with fresh water but not as well with salt water. Must be a low percentage anyway ... and encapsulated in the HC base ...
 
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The best grease for polyurethane is grease made for it. Energy Suspension 9.11110 part number for the Formula 5 lube. If ES swears by it on their bushings knowing they offer a warranty for bushing failure I would trust it.

If you don't want grease specific for poly like the ES recommendation. Any full synthetic grease like Mobile 1, Amsoil, etc will work just fine.

I had a [censored] near full Poly Urethane front and rear on my Mustang 2003 GT for years as a daily in Tennessee and never had a squeek I heard. Control arms, swaybar bushings, and so on. No issues that I heard over the exhaust
 
Silicone paste is the right choice, 3M, Energy Suspension, etc.

It does not separate, will not thin on hot days, D1264 0.25%, and the cost is justified for other uses. You should not have to reapply it after every rain. If that is the same result you should machine a grease channel reservoir in the bushing or bracket and pack it in. You don't need much.

Not a cartridge but frankly that is not necessary. These are not fast moving parts and relube interval should be very long. Use less grease in total, and save money and time even if it costs more per oz.

http://multimedia.3m.com/mws/media/889069O/3mtm-silicone-paste-clear-08946-8-oz.pdf

$20 for 8oz on Amazon.

The Energy Suspension Formula 5 is also silicone and cheaper at around $17 delivered for 8oz.

http://www.energysuspensionparts.com/9.11104
 
Originally Posted By: Y_K
Would that be a good lubricant for sunroof as well? I realize, it is not PU.

TIA


Are you talking about the track, or motor, something else, everything? I would use a grease compatible with what is already there, but silicone grease is good for water tight seals/gaskets or at least slowing their decay. Visible areas of the track for metal-metal contact I would use plain clear lithium grease, or silicone grease if it has plastic to metal, and clean and relube it often if it gets dirty. The grease performance isn't very important for this, just that it has some, new enough it hasn't hardened, and doesn't have debris gunking it up.
 
Originally Posted By: buck91
Originally Posted By: doitmyself
Why not silicone?


Not aware of any reasonably priced options that com in either 3oz or 14oz cartridges?


Why not look at Prothane Super Grease? It's available in 14 oz cartridges.
 
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