This is from an almost 10-year old test, but it should be still true:

A study done by Machinist's Workshop magazine in their April 2007 issue looked 
at different penetrating oils to see which one did the best job of removing a 
rusted bolt by measuring the pounds of torque required to loosen the bolt once 
treated. If the study was scientifically accurate, it turns out a home brew 
works best! Here's the summary of the test results: 

Penetrating oil .......... Average load 

None ..................... 516 pounds 

WD-40 .................... 238 pounds 

PB Blaster ............... 214 pounds 

Liquid Wrench ............ 127 pounds

Kano Kroil ............... 106 pounds 

ATF-Acetone mix.............53 pounds 

The Automatic Transmission fluid (ATF)-Acetone mix was a "home brew" mix of 50 
– 50 automatic transmission fluid and acetone. Note the "home brew" was better 
than any commercial product in this one particular test. Note also that "Liquid 
Wrench" is about as good as "Kroil" for about 20% of the price.

Marek

From: robert via CnC-List 
Sent: Monday, March 09, 2015 12:20 PM
To: Steve Thomas ; cnc-list@cnc-list.com 
Subject: Re: Stus-List Tool recommendation

Steve:

Advice, that from my experience in these situations, I would agree with.  If 
the bolt won't turn, anything less than a perfect fit will begin the 'stripping 
process' which will ultimately make the job more difficult.

David, I have tried this 'home made penetration concoction' with 
success......by volume, half and half of power steering fluid and 
acetone......and make sure if you try this, it gets on the parts you want 
unseized and not on other parts, like hoses, belts, etc.    I used an 'eye 
dropper' which I found very controllable and exact.....almost no spillage.  I 
loosen the seized bolts on my mixing elbow and exhaust flange with this 
concoction before I got into trouble with , maybe a broken bolt head.

Rob Abbott
AZURA
C&C 32 - 84
Halifax, N.S. 



On 2015-03-09 11:43 AM, Steve Thomas via CnC-List wrote:

  I would NOT try to use an open end wrench of any kind to loosen a bolt that 
is really stuck. There is too high a probability that you will just round off 
the head and make your task even more difficult. Use some kind of closed 
wrench, either the box end of a combination wrench, or a  socket, preferably a 
six point. From your description it sounds like a socket is out of the 
question, which is too bad. I would not try to use any kind of one size fits 
all or adjustable for breaking it loose either. I have never yet seen one that 
will reliably transmit torque as good as a solid lump of metal. 

  Once the bolt is broke free there are many options. I like the box end 
wrenches that have the ratchet built in, in situations when a socket wrench 
cannot be used. They are almost as good as combination wrenches for tight 
fitting situations and the ratchet makes them a lot more convenient to use. 

  Steve Thomas
  C&C27 MKIII


    ----- Original Message ----- 
    From: David Knecht via CnC-List 
    To: CnC CnC discussion list 
    Sent: Monday, March 09, 2015 10:12
    Subject: Stus-List Tool recommendation

    I was at the boat yesterday and tried to take the heat exchanger off the 
engine (Universal M4-30) so I could refurbish the seals and make sure it is 
clean (http://www.pbase.com/mainecruising/heat_exchanger).  One bolt came off 
easily but the one on the starboard side is a challenge.  I cannot get a socket 
on it because something from the engine or transmission is partially blocking 
frontal access.  I found my wrench selection on board is less than adequate and 
I need to upgrade.   I tried with a short 1/2" open end wrench and was able to 
get it on, but could not budge the bolt.  I left it sprayed with penetrant 
hoping that will loosen it.  

    I looked at other wrench types to see what would be useful in this 
situation and came upon this ratcheting wrench I had not seen before:  
    
http://www.amazon.com/Alden-Wrench-56038-Ratching-Open-End/dp/B002VEC9XE/ref=sr_1_1?s=hi&ie=UTF8&qid=1425909762&sr=1-1&keywords=alden+ratchet
 

    It looks like something useful to have on the boat as the clamping action 
should work on both metric and SAE, it is stainless and it ratchets.  Has 
anyone tried something like this?  

    The other type I am considering is the flex head ratcheting  wrenches:
    
http://www.amazon.com/Husky5-Pieces-SAE-Flex-Ratcheting-Wrench/dp/B00CBFVKT2/ref=sr_1_4?s=hi&ie=UTF8&qid=1425910197&sr=1-4&keywords=ratcheting+flex+wrenches

    Dave


    Aries
    1990 C&C 34+
    New London, CT

     


----------------------------------------------------------------------------
    _______________________________________________

    Email address:
    CnC-List@cnc-list.com
    To change your list preferences, including unsubscribing -- go to the 
bottom of page at:
    http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com



   

_______________________________________________

Email address:
CnC-List@cnc-list.com
To change your list preferences, including unsubscribing -- go to the bottom of 
page at:
http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com





--------------------------------------------------------------------------------
_______________________________________________

Email address:
CnC-List@cnc-list.com
To change your list preferences, including unsubscribing -- go to the bottom of 
page at:
http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com

_______________________________________________

Email address:
CnC-List@cnc-list.com
To change your list preferences, including unsubscribing -- go to the bottom of 
page at:
http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com

Reply via email to