ATF is not miscible in acetone, you are correct.

I have found that good old Jet A or Kerosene is quite good.

Scott W7SVJ

From: Roy Morgan <[email protected]>
Sent: Tuesday, April 25, 2023 02:18
To: scottjohnson1 <[email protected]>
Cc: [email protected]; [email protected]
Subject: Re: [ARC5] [Milsurplus] Penetrating oil test -

There was an article in "Home Machinist" magazine with results of a number of penetrating oils. 

I tried the ATF/acetone. They DID NOT MIX.  Maybe I used the wrong (more modern) ATF??

Any experience/suggestions welcome. 

Roy Morgan

K1LKY Western Mass

[email protected]

On Apr 24, 2023, at 12:08 PM, scottjohnson1 <[email protected]> wrote:

Sounds like a surrogate for Aero Kroil.

(An excellent product)

Scott W7SVJ 

Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------

From: [email protected]

Date: 4/24/23 08:56 (GMT-07:00)

To: [email protected]

Subject: Re: [ARC5] [Milsurplus] Penetrating oil test -

I've been told from aviation sources that a 50/50 mixture of automatic transmission fluid and acetone is the best penetrating oil for stuck screws.  But I have not tried it.  Yet.

Wayne
WB5WSV
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