Penetrating Oil
Printed From: Unofficial Allis
Category: Other Topics
Forum Name: Shops, Barns, Varmints, and Trucks
Forum Description: anything you want to talk about except politics
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=195160
Printed Date: 25 Aug 2025 at 5:50pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Penetrating Oil
Posted By: Dusty MI
Subject: Penetrating Oil
Date Posted: 15 May 2023 at 3:20pm
|
Maybe 60 years ago I bought a can of penetrating oil, Rust Aid by Detroit Efficiency Company. That was the best I had ever had, and have never found any sense of the same. What is the best can be bought today ? Dusty ------------- 917 H, '48 G, '65 D-10 series III "Allis Express" |
Replies:
Posted By: Darwin W. Kurtz
Date Posted: 15 May 2023 at 3:26pm
| make your own with 1/2 automatic trans fluid and 1/2 paint thinner. A salvage yard man told me they had freed stuck motors with this combination |
Posted By: KMAG
Date Posted: 15 May 2023 at 3:54pm
|
While not as good as atf/acetone mix, Kroil works well. PB Blaster is a distant 3rd. WD40 is around 80th place. |
Posted By: Tbone95
Date Posted: 15 May 2023 at 6:42pm
Yeah, WD 40 smells kinda good, and it ends there. |
KMAG wrote:Posted By: Jgranat
Date Posted: 15 May 2023 at 8:55pm
| WD40 is a rust preventative, not a penetrating oil. I like blaster, but I think heat penetrates the best. |
Posted By: shameless dude
Date Posted: 15 May 2023 at 11:35pm
| I use JB 80 here. seems to beat out other penatrants. don't take much to work. |
Posted By: Dirt Farmer
Date Posted: 16 May 2023 at 2:15am
| CRC makes a product called Knock er Loose. You can get it at most auto parts stores, bad thing with it is that once you start using the can the spray pressure disappears in about a month then you have to squeeze the can to continue using it but works great and not bad smelling. There is also a product called freeze off that CRC makes that works good too, it uses a penetrating oil and extremely cold air in a can to loosen stuff |
Posted By: klinemar
Date Posted: 16 May 2023 at 6:02am
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Here is a video of Penetrating Oil testing. https://youtu.be/xUEob2oAKVs" rel="nofollow - https://youtu.be/xUEob2oAKVs |
Posted By: jaybmiller
Date Posted: 16 May 2023 at 6:42am
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In the beginning....the first 39 tries to make a 'displacer of water' failed.... then WD40 was created. While WD40 does have it's uses, it's NOT a very good 'penetrating oil',as tests have told. ------------- 3 D-14s,A-C forklift, B-112 Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water |
Posted By: PaulB
Date Posted: 16 May 2023 at 7:00am
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The answer to this is: "To each his own" I've had some thing stuck that KRIOL won't budge, others moved with PB Blaster. Right now I have a hub stuck on a MM U that nothing is working, home brews included. ------------- If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY |
Posted By: Clay
Date Posted: 16 May 2023 at 9:18am
| I have a friend who swears by iodine. Have not tried it myself. |
Posted By: DiyDave
Date Posted: 16 May 2023 at 6:05pm
I think you have it right, there. If its something unere about 1-1/4" I use this lil beauty: https://youtu.be/2eqFf4I5VXk" rel="nofollow - https://youtu.be/2eqFf4I5VXk Note, you don't have to heat to red, heat just long enough to get it smoking... And, as shown in the vid, you can still snap off stuff. I generally use a small impact, set to tighten, then to loosen, after the heating...  ------------- Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need! |
Posted By: DougG
Date Posted: 16 May 2023 at 6:40pm
| In my opinion, there all about the same- just a little oil lube in a simple spray can, we got that kroil at work - expensive,, |
Posted By: Tbone95
Date Posted: 16 May 2023 at 7:59pm
Is that really worth a winky face? |
Posted By: HudCo
Date Posted: 16 May 2023 at 8:11pm
| my new thing is free all , i have been using that for about a year or two ithink its the best rust buster penitrating oil i have ever used but much for lubricating . the better lubricating penatrating oil that i have useing is shaffers pentro90 . istill use texas refineries essental lube for penitrating oil when i am heating parts with the torch it really thats alot of heat |
Posted By: JC-WI
Date Posted: 17 May 2023 at 2:37am
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This can I got at an auction, Nut and bolt loosener, and it really did loosen stuff but sadly, I can't find anything about who sold the stuff ormade it other than PRESTO is on the can. wish I could find another can of that stuff.  It sure beat everything I have tried lately. ------------- He who says there is no evil has already deceived himself The truth is the truth, sugar coated or not. Trawler II says, "Remember that." |
Posted By: klinemar
Date Posted: 17 May 2023 at 6:18am
| I do like WD40 because of the straw feature on the can. As for best product, I don't really care! In some situations any lubricant would work. In other situations your using a cut off wheel or the "Hot Wrench"! |
Posted By: iowallis
Date Posted: 18 May 2023 at 10:28pm
At work the maintenance mechanics use this stuff, haven't tried it myself. As a joke when one of them got married (and mentioned starting a family) on his can on his cart they taped over the "loose" and put "up". Most times I use the 50/50 mix. Have a can of Kroil for extreme cases as that stuff is expensive. Bought a can of Free All to take to the salvage yard but can't say how it would work on an extremely rusted/stuck bolt/nut.
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Posted By: AC7060IL
Date Posted: 19 May 2023 at 9:32am
Definitely add heat for toughest items. If possible, try to heat the item that you’d like to expand. If you can’t expand the ideal part, then Heat will transfer very well on attaching part(s). One time I was able to successfully remove a corroded semi truck’s engine starter mount bolt by heating the bolt’s head(only piece I could access with torch heat). It was a Steel bolt threaded into an aluminum transmission bell housing ~ so decades of corrosion between different metals. Took two heat cycles(dull red color). Heat up, let cool, do again. |
Posted By: ACinSC
Date Posted: 19 May 2023 at 11:31am
| For those of us without a welder or torch is there any handheld propane style torch that will get hot enough ? Thanks |
Posted By: SteveM C/IL
Date Posted: 19 May 2023 at 1:41pm
| I think the MAP gas torches produce more heat. |
Posted By: ACinSC
Date Posted: 19 May 2023 at 3:30pm
| Thanks Steve ! I'll check them out . |
Posted By: klinemar
Date Posted: 19 May 2023 at 7:34pm
| This link explains MAPP Gas. To get a heat hot enough Oxygen is required. https://en.wikipedia.org/wiki/MAPP_gas" rel="nofollow - https://en.wikipedia.org/wiki/MAPP_gas |
Posted By: ACinSC
Date Posted: 19 May 2023 at 7:50pm
| Thanks Mark! |
Posted By: Walker
Date Posted: 20 May 2023 at 12:29am
|
I thought WD 40 is a moisture displacement. Try 50% ATF, 50% Acetone, season to taste, heavily slather on some brake fluid, again season to taste, and let her rip. The acetone will evaporate quickly, so act accordingly. Pour it in the toilet if stomach pains occur. See a Doctor either Jill or Kamala if erections last more than 4 hours. Should you land nose first get it as hot as you can and melt a candle on it. |
Posted By: D19allisowner
Date Posted: 20 May 2023 at 11:37am
|
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Posted By: ACinSC
Date Posted: 20 May 2023 at 11:47am
| Thanks Jim . That would be nice to have ! |