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Rusted/Stuck Part Shootout: Dry Ice vs CRC Freeze Off vs Acetone/ATF Poultice vs PB Blaster

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Rusted/Stuck Part Shootout: Dry Ice vs CRC Freeze Off vs Acetone/ATF Poultice vs PB Blaster

 
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Old 08-11-2014, 08:36 PM
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Rusted/Stuck Part Shootout: Dry Ice vs CRC Freeze Off vs Acetone/ATF Poultice vs PB Blaster

In today's shootout we took on some seriously rusted/frozen exhaust manifold bolts on an old 390 employing:

(1) Dry Ice
(2) CRC Freeze Off / Super Penetrant
(3) Poultice consisting of talc power, ATF, and acetone
(4) PB Blaster

The above were individually applied to two randomly selected rusted bolts across both banks. The Dry Ice was held in place for approx 30 minutes per bolt. The CRC Freeze Off application consisted of three 30-second sprays. The Poultice was brushed on and covered up with talc powder and cellophane wrap to prevent the acetone from evaporating, then allowed to remain on the bolts for approx 4 hrs. The PB Blaster application consisted of three 10-second sprays followed by an approx 4-hr wait before attempting removal.


Results:

Dry Ice was the clear winner (allowing for relatively easy bolt removal) followed by the Poultice which worked on one of the test bolts but failed to loosen the other for removal. CRC Deep Freeze / Super Penetrant and PB Blaster tied for last place and did little as the bolts remained "frozen".

:
 
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Old 08-11-2014, 08:50 PM
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How did you hold the dry ice in place? Got pics?
 
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Old 08-11-2014, 08:58 PM
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Originally Posted by eakermeld View Post
How did you hold the dry ice in place? Got pics?
With gloves...
 
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Old 08-11-2014, 09:03 PM
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Originally Posted by krooser View Post
With gloves...
For 30 MINUTES!?! I would need 2 potty breaks in there somewhere! That's......like.......3, maybe four beers!
 
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Old 08-12-2014, 05:29 PM
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Originally Posted by eakermeld View Post
How did you hold the dry ice in place? Got pics?

Didn't take pics but we cut up some styrofoam as a "v" jig (along with a Irwin Quick Grip) to hold the dry ice in place.

Pretty impressive how well the dry ice worked. Pretty unimpressive how the "canned" sprays didn't work.

 
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Old 08-12-2014, 05:34 PM
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Originally Posted by eakermeld View Post
For 30 MINUTES!?! I would need 2 potty breaks in there somewhere! That's......like.......3, maybe four beers!
Actually you don't want to hold dry ice or hang around it in a closed in area --- it displaces oxygen and you'll end up getting hypoxic before you know it.

 
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Old 08-14-2014, 09:21 PM
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Thanks for posting this...it's very helpful! Just a thought-have you ever tried Kroil? I have NO idea whats in it, but it has NEVER failed me, including rusted-on exhaust parts! It isn't cheap, something like 18.00/can, but it does what it says-period.

Roger
 
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Old 08-14-2014, 11:01 PM
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sorry, but 8 bolts is much too small a sample to draw any sort of conclusion from.
 
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Old 08-15-2014, 12:06 AM
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I swear by PB-Blaster. If you let it soak in for a day or two it works great. Never broken a bolt using the stuff.
 
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Old 08-15-2014, 04:40 PM
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Originally Posted by Roger T. Pipe View Post
Thanks for posting this...it's very helpful! Just a thought-have you ever tried Kroil? I have NO idea whats in it, but it has NEVER failed me, including rusted-on exhaust parts! It isn't cheap, something like 18.00/can, but it does what it says-period.

Roger

Yes I have, it's been around many many years and does very well in tests (see below from Machinist's Magazine)-- next shootout we do in my shop we'll add it to the mix of competitors.

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

 
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Old 01-03-2015, 04:16 PM
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Six-Month Update on the Shootout

Inputs from five shop mechanics along with ongoing tests on 40-50 year old tractors (e.g 1966 JD 2510) and farm implements ---- latest summary opinions below. Dry ice remains the winner and we have not yet found a frozen nut/bolt it couldn't handle. The surprises were how well molasses and the oil of wintergreen worked. Pepsi also outperformed PB Blaster which really surprised us. Adding the farm implements (many sat in fields for years) allowed us to try the competitors below individually on similar bolts in a particular section of the implement which helped remove some bias in our opinion polling.


(1) Dry Ice
(2) CRC Freeze Off / Super Penetrant
(3) Poultice consisting of talc power, ATF, and acetone
(4) Oxy-Acetylene or Oxy-Propane w/candle wax
(5) Kroil
(6) Oil of Wintergreen
(7) Molasses
(8) Pepsi
(9) PB Blaster
(10) WD-40
(11) Liquid Wrench


 
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Old 01-04-2015, 08:56 PM
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Do you think the dry ice works so well is it contracts the bolts
 
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Old 01-04-2015, 09:03 PM
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Aerokroil is my friend.............never has let me down. Give it plenty of time to soak (overnight) and you wont find anything it wont work on.
 
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Old 01-04-2015, 09:11 PM
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Sea Foam Deep Creep is my go to at work . At home I also use brake fluid on old rusted stuff where finish does not matter . Amazing how well it works .
 
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Old 01-04-2015, 10:03 PM
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Marvel's has wintergreen oil in it, that's why it works so well for stuck rings and lifters or so I've heard.
 

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