Best penetrating lubricant

[Johnson Johnson]

WD40 is BS IMO, use a specific penatrating oil.

 

[50yr Street Mech]

KROIL

 

[Elkins45]

KROIL

You can almost buy a new car for the cost of a can of Kroil these days. I hoard my remaining can like dragon’s gold.

 

[Nessism1]

You can almost buy a new car for the cost of a can of Kroil these days. I hoard my remaining can like dragon’s gold.

$33/16.5 oz can. I recently purchased a can of WD-40 Specialist Penetrant spray for $6.43/11 oz. Not expecting it to be world-class, but hoping it will be good enough.

 

[Pablo]

You can almost buy a new car for the cost of a can of Kroil these days. I hoard my remaining can like dragon’s gold.

I found a half can in my shop when cleaning. I sat down and soaked in the glory.

 

[SammyChevelleTypeS3]

You can almost buy a new car for the cost of a can of Kroil these days. I hoard my remaining can like dragon’s gold.

KROIL always gets my vote. It did amazing things for us at work. Very true about the cost. I was shocked several years ago when I was ordering cases of it ahead of any job site shutdown maintenance at how much it cost then. Plus I was ordering the small cans too! Thing is IT WORKED! We actually had to start keeping it locked inside a storage bin at the shop or it would get stolen. Leave a can out on the work table, next morning it was gone!

 

[Dborch41]

WD40 is BS IMO, use a specific penatrating oil.

There's a lot of misconceptions about what WD-40 is good for. The WD stands for "water displacement", which is what it's best at (took them 40 tries to get it right). As far as lubricating properties go it's extremely lightweight and has very little staying power, it's actually more of a solvent than a lubricant which gives it good cleaning properties and is safe for most surfaces except some plastics.
It has some penetrating qualities, but nowhere close to the dedicated stuff.

 

[50yr Street Mech]

Yeah, I only use my stash of KROIL " In Case Of Emergency"... I have the other run of the mill stuff I use all the time, like Supertech, WD-40, 3 in 1 ,,etc...

 

[repairman54]

Kroil hands down my favorite. A little goes a long way.
WD is not the same, I remember back when you could use it as a starting fluid. That was until it went from extremely flammable to flammable on the can.

 

[Snagglefoot]

I don’t believe the work done by Project Farm was mentioned. Google it.
Unlike motor oil tests, the penetrating oil tests were the best out there. Watch the videos and report back.

 

[50yr Street Mech]

WD changed their formula ( ya think ? ). What's nice about Kroil is you hit the nozzle and you can REALLY control how much comes out. Not like the others, it gets sprayed all over the place. The force of the spray is uncalled for. You want to apply it to a particular area, not the whole half of the car LOL

 

[50yr Street Mech]

Will do Snag

 

[Pablo]

I love how PB Blaster smells of yellow jacket stings and cancer

 

[4WD]

I love how PB Blaster smells of yellow jacket stings and cancer

I can’t deal with that smell … There are plenty other sprays

 

[50yr Street Mech]

That's hysterical. I'm gonna buy some just to smell it !!!!! ( and use it. They say it woks well )

 

[Pablo]

That's hysterical. I'm gonna buy some just to smell it !!!!! ( and use it. They say it woks well )

Nothing like it. It works decently on dissimilar metal fastener situations (steel plug in Al case). Straight Fe oxidation, meh OK. But yes use outside with a fan.

 

[rszappa1]

Jig A Loo....

 

[Johnson Johnson]

There's a lot of misconceptions about what WD-40 is good for. The WD stands for "water displacement", which is what it's best at (took them 40 tries to get it right). As far as lubricating properties go it's extremely lightweight and has very little staying power, it's actually more of a solvent than a lubricant which gives it good cleaning properties and is safe for most surfaces except some plastics.
It has some penetrating qualities, but nowhere close to the dedicated stuff.

I remember using it to lubricate by cycle chain as a kid and it acted like flypaper for grit, horrible stuff. I've heard it's good for spraying into door bottoms to prevent rust, but apart from that it's possibly BS. It's not good for rubber or plastic either IMO.

 

[SammyChevelleTypeS3]

Kroil hands down my favorite. A little goes a long way.
WD is not the same, I remember back when you could use it as a starting fluid. That was until it went from extremely flammable to flammable on the can.

Another long time old mechanic's WD40 trick is to use it to locate engine vacuum leaks. Spraying it in short burst across the top of a running engine. When it passes over the leaking area one can hear the engine speed change. Yeah, it has its uses but is not much of a lubricant at all.

 

[Hohn]

There's a lot of misconceptions about what WD-40 is good for. The WD stands for "water displacement", which is what it's best at (took them 40 tries to get it right). As far as lubricating properties go it's extremely lightweight and has very little staying power, it's actually more of a solvent than a lubricant which gives it good cleaning properties and is safe for most surfaces except some plastics.
It has some penetrating qualities, but nowhere close to the dedicated stuff.

WD40 is great for wiping down tools after I'm done working on a vehicle. I've get to find another use for it where there's not a better product easily found.

Unfortunately, I think basic mineral spirits might even have the advantage over WD40 at the trivial task of tool wipe down oil.