Penetrating oil

[RiverRider]

So, what's the consensus on the best penetrating oil available? I know there's probably an old thread on this but there are likely new products since the last post.

I've used Kroil on gun-related stuff and it's very good, but I need to replace my empty aerosol WD40 and since a can of this stuff usually lasts four or five years for me, I want the stuff that will work the best.

 

[Strouty]

You are going to get all the same responses the old threads had. A lot of times I just use 50/50 ATF and acetone. Just make sure you shake it before using it, as it really doesn't stay suspended long. Kroil is my go to store bought. I also like marvelous mystery oil.

 

[NUTTSGT]

Yes, there has been a few threads on this.

I like Kroil, but I use PB Blaster, Liquid Wrench and WD40 (buy a gallon can and squirt bottle).

 

[sonvolt]

Deep Kreep works well too.

 

[Strouty]

Yes, there has been a few threads on this.

I like Kroil, but I use PB Blaster, Liquid Wrench and WD40 (buy a gallon can and squirt bottle).

Buy a gallon and buy one of those pressurized cans! Sure shot I think?

 

[Strouty]

I checked, it is Sure Shot. They can be used for brake cleaner as well, buy that in gallons and save a ton. I would buy a dedicated can for that.

http://www.sureshotsprayer.com

 

[lakota]

Not the best but free, they have a rust penetrant

WD - 40 Specialist Product Free after rebate

Saw the form on a can at Lowes at the end cap in tool dept. Get one of seven products free. Most products were $7.00.
Here's the online form
http://wd40specialist.com/pdf/WD-40-Specialist-Rebate.pdf

NOTE: soaked the rear door key lock on my SUV with Kroil for two weeks and put the key in and tapped with a rubber hammer every few days. No luck. Used the WD Specialty Rust Penetrant for 24 hours and surprised that the key lock worked and still does after 6 months. Not saying that the WD did it but ?

 

[Dust Devil]

Just put a little butter on it...

 

[G_P]

I use Kroil. A little goes a long way.
I tried the 50/50 ATF/acetone and it would not mix. It acted like oil and water and separated out in seconds after shaking it.

 

[BFBOB]

Nothing works all the time; anything works some of the time. I keep Kroil, Liquid Wrench, PB Blaster and WD-40 on hand, and have tried several others. One intractable Indestro ratchet finally yielded to 6 months soaking in used motor oil.

 

[Bobdog]

Kroil is the best I've found in 3 decades of wrenching. Knock-er-Loose from grainger is pretty decent too. WD40 is the bottom of the barrel.

 

[dede2897234]

RiverRider,

Here is the mega thread on the best penetrating sprays started earlier this year: LINK. Happy reading!


Dave

 

[bonneyman]

You are going to get all the same responses the old threads had. A lot of times I just use 50/50 ATF and acetone. Just make sure you shake it before using it, as it really doesn't stay suspended long. Kroil is my go to store bought. I also like marvelous mystery oil.

Have personal experience with the 50/50 and MMO - both work well.

I also like this stuff:

http://www.reliableparts.com/product/inv_1983776/Refrigerator-Accessories-461397

 

[Strouty]

Kroil is the best I've found in 3 decades of wrenching. Knock-er-Loose from grainger is pretty decent too. WD40 is the bottom of the barrel.

Then you must remember when it used to be the cheapest out there. I actually remember getting in trouble for using WD40 versus Kroil because of the price difference. Now the makers of Kroil think they **** three flavored ice cream ( I guess I may agree).

 

[fuddinator]

My favorite is Mouse Milk. I have never had it fail on me. Works great as drill and tap lube as well.

 

[Strouty]

What is mouse milk?

 

[ez-duzit]

Kroil is the best I've found...
WD40 is the bottom of the barrel.

*This.*

 

[Xtrom]

I like Zep.

 

[Hootbro]

What is mouse milk?

Mainly used in the aircraft industry and outside of that, is not normally found in most industrial suppliers. Very niche product.

I have a small bottle of it and find it does nothing that Kroil cannot just as well do for most home or automotive use.

http://www.mousemilk.com/

 

[nfk]

I use PB Blaster and WD-40

 

[RiverRider]

I be got gallons of mineral oil and Stoddard solvent too. Maybe I'll add a little ATF to them and see how they perform.

 

[rick carpenter]

After whatever you use, add heat if you can. I think by vaporizing the liquid between the friction surfaces it expands (plus the metal expands), so that may help break the rust/gunk 'seal'.

 

[Strouty]

Mainly used in the aircraft industry and outside of that, is not normally found in most industrial suppliers. Very niche product.

I have a small bottle of it and find it does nothing that Kroil cannot just as well do for most home or automotive use.

http://www.mousemilk.com/

Thanks.

 

[kramarj]

This is my go to- https://www.bgprod.com/catalog/specialty/bg-in-force/

It seems to work way better than PB Blaster IMO. I also think it works better than the ATF/acetone mixture.

 

[monkeyspanners]

GT85, need to get some more, something fell on it in the van and emptied the can....

http://www.gt85.co.uk/product-range

 

[gravelydude]

Kroil is the best widely available product that I have used. Always helps to spray, then jar (light hammer blows). Heat is even better, as previously mentioned. I have never been so desperate as to use WD40 for a penetrant. One of my best friends, who is no longer with us, always said "my as well just piss on it as use WD40."

Jack

 

[Bobdog]

Then you must remember when it used to be the cheapest out there. I actually remember getting in trouble for using WD40 versus Kroil because of the price difference. Now the makers of Kroil think they **** three flavored ice cream ( I guess I may agree).

True, but I pass the cost on to my customers, so it doesn't really affect me. They get the benefit of me getting done quicker which saves labor charge. Everybody wins.

 

[Strouty]

I just miss being able to buy a gallon of kroil for $12.95.

 

[bob15]

I like kroil, but prefer Tri-Flow

http://www.triflowlubricants.com/

 

[Sanny81]

I get Zep 45 from work to use and it works great.

 

[bobcatdan]

I love kroil, hard to beat in my book. Another good one is Starret M1. Maybe not as good as kroil, but is more general purpose making it a great compliment. I love the stuff for soaking cruddy nuts and bolts amazing cleaning ability.

 

[allenfab]

I'm surprised there's 4 pages and no mention of pentro 90. It's made by Schaeffer's and I prefer it to kroil.

 

[Strouty]

Thanks, now I have to find another obscure oil.

 

[skruft]

I have used Liquid Wrench and PB Blaster - plan to try Kroil since I have some around.

 

[zmotorsports]

My go to is Kroil but I also use PB Blaster on occassion. Kroil creeps so well that it is hard to beat.

Mike.

 

[sberry]

WD 40 is better than none but we use Liquid Wrench and on occasion another obscure brand found at farm stores but the wrench now comes in a couple flavors but,,, which spray is about like the high school swim team shaving hair again.
Getting some juice in a dry thread and worked over it is the name of the game and since we work a lot on stuff we keep we spray every bolt we put in.
Even on corrosive fertilizer equipment giving a bolt and nut a shot of WD40 before assembly makes a huge difference, even under water.
We use spray cans for convenience but back when we used bulk the juice was gallon of WD and pour in a pint to a quart of ATF.
Wrench really played competitive and now dominates the market. We use a little CRC if on sale but look for case sales when we can get it.
Kroil is ok but I aint fukkin with it.

 

[sberry]

Anywhere it gets near 3$ I am snagging half a dozen. I don't care for PB's can, fuggin gusher. I want a drop or 2 sometimes and the object isn't to make as much mess as I can. It was a bright spot with Kroil, the cans worked a long time then they cheapen that and it works about half way thru.

 

[sberry]

The stuff from Walmart is the worst unless its got some tech film it leaves. It just seems dry and one of the things I am after is oily trapped lubricant in threads vs them being a channel for the first drop of water that comes along.

 

[ez-duzit]

For fastener corrosion prevent a vastly superior product is TefGel.
http://www.tefgel.com/contain.php?param=tefgel_infor

 

[LordPsychon]

I love kroil, hard to beat in my book. Another good one is Starret M1. Maybe not as good as kroil, but is more general purpose making it a great compliment. I love the stuff for soaking cruddy nuts and bolts amazing cleaning ability.

I'd vote for Starrett too.