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Marine grease

2.8K views 32 replies 21 participants last post by  Mtbkn  
#1 ·
i was looking at an older tin can Coles gun grease that I have for a while and was wondering if I could find something equal to if off a shelf locally. It’s blue in color and was thinking some sort of marine grease possibly.

I picked up some different ones and tried them for a while to see if any compared to the CG grease. My testing was done by sight and feel alone. Nothing scientificky about it. Used on an OU pivot areas.

Coles went in and stayed put but after 150-200 rounds felt like it was in need of a re greasing.

Stp marine grease was one prettiest in color I tested but lacking in stiction. After about 100 rounds it felt like it needed more. And when I disassembled the OU you could tell that it was much thinner and not Much left where I put it.

The best one Ive tested so far was the Lucas marine. Kinda blue/greensih in color. It felt like it was still there after 300-400 rounds. The gun still opened and closed smoothly And when I took it apart there was quite a bit still on the pivots.

I put some on a card after testing to contrast the colors and was kinda surprised by the oil “creep”. oddly or not the creeping aligns with what I found out in the prior weeks. Lucas stayed put followed by Cole’s and then the STP.

1st pic was at the time of applying it to the card.
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2nd pic 12 hours later

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3rd 24 hours later.

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I’ved switched to using the Lucas marine grease where needed and Lucas gun oil where needed. Going to run that a while and see how it goes.


Again not scientific. YMMV. My observations only. Just thought I’d share.
 
#5 ·
Mtbkn,

Good job. As a scientist (Industrial Chemist for 39 yrs), I would disagree and say you conducted a valid performance test for lubricity and functional time, and an examination of a physical property looking for evidence of a potential cause. Your oil leeching test is an example of a fundamental technique called paper chromatography (which is more effective with a carrier/solvent). Since your test was performed under the same conditions, time frame, and similar sample size, I would give it's preliminary results a significant degree of validity. If you repeated it a couple more times and got similar results it would increase it in statistical validity. You think like a scientist sir!

Just based upon your test, I would bet that the first two are physically mixed to make the greases with little or no dispersing agent for uniformity and viscosity control, where Lucas does a better job and may have more dispersant to maintain the integrity of the grease.
 
#9 ·
Mtbkn,

Good job. As a scientist (Industrial Chemist for 39 yrs), I would disagree and say you conducted a valid performance test for lubricity and functional time, and an examination of a physical property looking for evidence of a potential cause. Your oil leeching test is an example of a fundamental technique called paper chromatography (which is more effective with a carrier/solvent). Since your test was performed under the same conditions, time frame, and similar sample size, I would give it's preliminary results a significant degree of validity. If you repeated it a couple more times and got similar results it would increase it in statistical validity. You think like a scientist sir!

Just based upon your test, I would bet that the first two are physically mixed to make the greases with little or no dispersing agent for uniformity and viscosity control, where Lucas does a better job and may have more dispersant to maintain the integrity of the grease.
Thanks for adding some validity to the tests.

Would that mean that Lucas grease would perform better over time? Not that it matters in this case as it’s replaced almost weekly.
 
#13 ·
For shotguns, about any grease will do and like most lubricant applications it is more important to clean and relube at reasonable intervals than to be concerned about whose name is on the product. Lucas does make good products, but so doesn't Valvoline, Mobil, Royal Purple, Shell and the list goes on and on and on.
 
#15 ·
I am using Pro Gold now. The gun parts are not moving fast and they do not get hot. (warm, but not hot). As long as the grease is clean I doubt if it matters much what kind it is.

Why not just order some more from Briley if you like theirs. I just ordered a second container of their blue choke tube grease I have been using and it was a whole $3.95.
 
#18 ·
The best one Ive tested so far was the Lucas marine. Kinda blue/greensih in color. It felt like it was still there after 300-400 rounds. The gun still opened and closed smoothly And when I took it apart there was quite a bit still on the pivots.
I think you have an indication here.


Claysman and Sera,

Please not CHOKES!!!!
Not shot strings!
Not 7.5 vs 8 shot!!!
Not....muzzle velocity!!
 
#27 ·
I use Valvoline Red or Lucas Marine on my trailer bearings.

I use SLIP2000 Extreme Weapons Grease on all firearms. O/Us, SxS, semi-auto shotguns, rifles, and handguns. All run like a Swiss watch. My Sig 45 ACP and FN are happy campers. The EWG doesn't collect dirt, powder residue, carbon, or other grime anywhere near like mechanical greases or oils. It is not cheap, but you only use a relatively small amount.
 
#28 ·
Image


In addition to MTBKN excellent post I did the same to add data for all. I used very thin corrugate, not card stock

24 hrs. Say 70 degrees in the man cave. Dehumidifier running.

Tier 1
CMD Kolar Grease

Tier 1 B
K80 Grease Gun Glide

Tier 2
White Lith
Extreme Flouro
Miltec
Super Lube

Tier 3
Mobil Synth red
Stos
Frog
Super Web


This tracks. CMD i felt was the best. No galling whatsoever and is my go-to
 

Attachments

#29 ·
View attachment 120796

In addition to MTBKN excellent post I did the same to add data for all. I used very thin corrugate, not card stock

24 hrs. Say 70 degrees in the man cave. Dehumidifier running.

Tier 1
CMD Kolar Grease

Tier 1 B
K80 Grease Gun Glide

Tier 2
White Lith
Extreme Flouro
Miltec
Super Lube

Tier 3
Mobil Synth red
Stos
Frog
Super Web


This tracks. CMD i felt was the best. No galling whatsoever and is my go-to
Awesome thanks for posting that.

Mowill probably be the last one I look into. I’m satisfied with the Lucas marine and it does what wanted and 1 tube will last me quite
 
#32 ·
An update. Ive been using the Lucas Marine grease exclusively on my actions and choke tubes for about 7 months now. I used it on my CG and now on my Blaser with several thousand rounds through both of them with zero issues.

Its simple, cheap and works really well.
I've been using Vaseline for about 20 years with 75,000+ rounds through our guns without any issue.

As several previous posters have stated regularly removing old grease and applying fresh clean grease is much more important than which grease you use.