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20-03-2020, 13:49
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#1
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Registered User
Join Date: Mar 2006
Location: Grenada
Boat: Montevideo 43 sloop
Posts: 168
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Which penetrating fluid for which job ?
I have purchased a few “recommended” cans and seldom been ecstatic - thought I would ask my fellow “I can fix that” experts what they recommend and for what type of seized job ?
I was recommended to use Acetone for a seized winch after all other methods failed - didn’t work either ???
We all know about WD40 , so , what else works ?
...
__________________
dont worry - be happy
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20-03-2020, 13:53
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#2
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Registered User
Join Date: Sep 2016
Posts: 47
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Re: Which penetrating fluid for which job ?
PB Blaster.
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20-03-2020, 13:59
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#3
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Senior Cruiser
Join Date: May 2013
Location: Oregon to Alaska
Boat: Wheeler Shipyard 83' ex USCG
Posts: 3,499
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Re: Which penetrating fluid for which job ?
Kearney rust cutter is the best stuff I've ever used on steel nuts & bolts, cast iron and other metals. It also works great on rusted-to-the-cylinder rings. It's made and sold for power transmission tower work. People 200' in the air don't have time for the usual ground options.
https://www.ebay.com/itm/Kearney-Rus...0AAOSwEdteC4sk
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20-03-2020, 14:18
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#4
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Registered User
Join Date: Dec 2018
Posts: 160
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Re: Which penetrating fluid for which job ?
I hate PB Blaster for this. It blows all over the place wasting most of it, by design I would imagine. Any aerosol will.
Get some Liquid Wrench in a little drip type oil can with needle nose spout. It is so thin it penetrates easily and can be put right where you need it. Very little waste.
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20-03-2020, 14:24
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#5
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Registered User
Join Date: Feb 2012
Location: Toronto area when not travelling
Boat: Nonsuch 30
Posts: 1,664
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Re: Which penetrating fluid for which job ?
Quote:
Originally Posted by krissteyn
I have purchased a few “recommended” cans and seldom been ecstatic - thought I would ask my fellow “I can fix that” experts what they recommend and for what type of seized job ?
I was recommended to use Acetone for a seized winch after all other methods failed - didn’t work either ???
We all know about WD40 , so , what else works ?
...
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I seem to remember a recommendation to use acetone mixed with ATF. I think the problem with straight acetone is that it would quickly evaporate before doing much penetrating. PB Plaster is pretty good.
__________________
Have taken on the restoration of the first Nonsuch, which was launched in 1978. Needs some deck work, hull compounding, and a bit of new gear.
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20-03-2020, 14:34
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#6
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Registered User
Join Date: Nov 2019
Posts: 1,642
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Re: Which penetrating fluid for which job ?
Quote:
Originally Posted by krissteyn
I have purchased a few “recommended” cans and seldom been ecstatic - thought I would ask my fellow “I can fix that” experts what they recommend and for what type of seized job ?
I was recommended to use Acetone for a seized winch after all other methods failed - didn’t work either ???
We all know about WD40 , so , what else works ?
...
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Use a penetrating fluid that first “ freezes “ the fastener to shrink it , then allows the fluid to penetrate
This brand is popular
https://www.wurthusa.com/Chemical-Pr...t/p/0893241002
Other brands are available
Check at a good auto parts store of pro tool shop
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20-03-2020, 14:48
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#7
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Moderator
Join Date: Nov 2011
Location: aboard, cruising in Australia
Boat: Sayer 46' Solent rig sloop
Posts: 28,432
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Re: Which penetrating fluid for which job ?
Quote:
Originally Posted by krissteyn
I have purchased a few “recommended” cans and seldom been ecstatic - thought I would ask my fellow “I can fix that” experts what they recommend and for what type of seized job ?
I was recommended to use Acetone for a seized winch after all other methods failed - didn’t work either ???
We all know about WD40 , so , what else works ?
...
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What Jim has been using was something he found out about here on CF, and is colloquially referred to as Weasel's Piss. You mix it yourself, and we keep ours in a small jar with a tight sealing lid. Equal parts acetone and ATF (automatic transmission fluid). It really is very good. You can get stuff apart without breaking anything.
Ann
__________________
Who scorns the calm has forgotten the storm.
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20-03-2020, 15:06
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#8
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Registered User
Join Date: Jan 2020
Location: EC
Boat: Cruising Catamaran
Posts: 1,046
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Re: Which penetrating fluid for which job ?
Oil of wintergreen. Some commercial products use this in their formula too.
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20-03-2020, 15:07
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#9
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Moderator and Certifiable Refitter
Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: C.L.O.D.
Posts: 20,301
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Re: Which penetrating fluid for which job ?
Another vote for a 50/50 mix of acetone and ATF.
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
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20-03-2020, 15:57
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#10
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Registered User
Join Date: Feb 2020
Posts: 34
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Re: Which penetrating fluid for which job ?
Kroil hands down. My grand pappy showed me it years ago and I swear by it. Sometimes I use a combination of this and a torch. Never failed to do the job
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20-03-2020, 16:51
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#11
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Registered User
Join Date: Feb 2014
Posts: 5
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Re: Which penetrating fluid for which job ?
Seized wenches usually loosen up with copious amounts of alcohol.
All kidding aside, if a winch is seized internally isn't a rebuild or replacement in order? Otherwise I'd try PB Blaster, ATF fluid/acetone, or a Corrosion X soak overnight. Maybe heat too, but beware petrol ignition.
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20-03-2020, 22:32
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#12
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Registered User
Join Date: Aug 2013
Location: Oakland, CA
Boat: Freedom 38
Posts: 2,503
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Re: Which penetrating fluid for which job ?
AeroKroil. Definitely AeroKroil for anything that sticks.
And a good hammer. Nothing else says you're serious like a hammer carried like you mean it.
Oh, and maybe a crow bar, too. Sometimes these things can use a bit more persuasion....
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21-03-2020, 03:32
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#13
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registered user
Join Date: Dec 2012
Location: back in West Australia
Boat: plastic production boat, suitable for deep blue water ;)
Posts: 1,090
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Re: Which penetrating fluid for which job ?
Do you need another supporter for the ATF/acetone combination? Me.
Reasons are: cheap, and works very well. Practical Sailor did a review a few years ago. If I recollect it correctly, they thought it performed better than anything else. Yes, the acetone part evaporates quickly.
When buying off the shelf, I would say Inox (mx3) gets my vote by a long shot.
The only good thing for WD40 and the like is that they come in cans will a long skinny spout, for precise and targeted application.
If only I could have Inox or ATF/acetone in such applicator......
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21-03-2020, 08:53
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#14
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Registered User
Join Date: Jun 2014
Location: Hampton, Va
Boat: Freedom 32'
Posts: 531
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Re: Which penetrating fluid for which job ?
Quote:
Originally Posted by JPA Cate
What Jim has been using was something he found out about here on CF, and is colloquially referred to as Weasel's Piss. You mix it yourself, and we keep ours in a small jar with a tight sealing lid. Equal parts acetone and ATF (automatic transmission fluid). It really is very good. You can get stuff apart without breaking anything.
Ann
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Have used with excellent results.
__________________
Life shrinks and expands in proportion to one's courage.
Anais Nin
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21-03-2020, 09:09
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#15
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Registered User
Join Date: May 2008
Posts: 3,524
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Re: Which penetrating fluid for which job ?
Another vote for Kroil. I prefer the 8 oz can that has a small spout under the cap that lets you place drops right on the fastener thread. Takes very little -- so one can could last a decade. Spray cans just make a mess for this application.
http://www.kanolabs.com/google/?gcli...SAAEgIRf_D_BwE
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