Select cars to narrow search
dont search for 599cc fortwo modsdont search for 698cc fortwo modsdont search for 999cc fortwo modsdont search for roadster modsdont search for 453 smart modsdont search for forfour mods

Info guides and mods

Penetrating Fluid

There are loads of penetrating fluids on the market but why not make your own?

Modification Details




Penetrating Fluid

Also known as dismantling fluid, penetrating oil, dismantling lubricant etc.
Essentially, it's a can of spray that you spray directly onto a seized fixing to aid in removal.

The fluid seeps into the part through the corrosion that has seized it in the first place.
You leave the fluid in place, ideally over night, and it should help make removal a lot easier.

How Does It Work?

More often than not, the corrosion between 2 metals has created a strong bond, either by corroding or adding oxidisation. 
The "rust" is deep inside the part and therefore covers a massive surface area, making it very strong.

Oxidation is usually dry, so applying a penetrating oil will naturally wick inside the part.
The oil breaks down the bond and lubricates the pieces.

Rust has a high water content. The penetrating fluid contains an alcohol base which is thinner than water
and therefore it easily pushes out the water in the rust. Alcohol natrually evaporates very quickly which
leaves gaps where the water was. These gaps are then filled with the oil that was suspended in the alcohol.
So, the rust is dried and lubricated to allow movement between the seized parts.

Popular Penetrating Fluids

PlusGas (UK)



GT85 (UK)



TryThis (UK)



Penetrene (AUS)



RP7 (AUS)



Liquid Wrench (US)



Kano Kroil (US)



PB Blaster PB16 (US)


There are many many more and the choice will differ depending on your country.

Making Your Own Penetrating Fluid

Let's look at the facts. Penetrating fluid is little more than alcohol and an oil. We can replicate that.

Alcohol

Don't break out your finest Vodka, we need a higher alcohol content. Popular sources for high content alcohol
are surgical spirit (rubbing alcohol), acetone (nail varnish remover), isopropanol and methylated spirits.

The easiest to get hold of is nail varnish remover, if you get that, double check
the label to ensure it's acetone as some brands are replacing it with other things.

Oil

All oils will lubricate so you really aren't limited all that much to what you use. However, use new oil.
You can use power steering fluid, automatic transmission fluid, engine oil, vegetable oil,
even your finest extra virgin olive oil. Just use what you have laying about.

The thinner the oil the better. That's why I recommend ATF transmission fluid over other oils.

Mixing Ratio

There are plenty of people claiming to know the best ratio however, it totally depends on what you are trying
to unseize. More alcohol will displace more water. More alcohol will make the mixture thinner allowing better
creep properties. Too much alcohol won't deposit enough oil inside the seized part to be effective.

For everyday use, 8 parts oil to 2 parts alcohol (volume) will be sufficient.
For more heavy duty use you can go as high as 1 part alcohol to 1 part oil (50:50).

Personally, I just have 50:50 just because it's better.

Effectiveness

There are many non scientific studies that suggest that home made fluid can out perform
the store bought (expensive) penetrating fluids. Having tried both ratios, I was impressed. It is important to
shake the mixture before use to disperse the 2 fluids properly. Also, if you use ATF (automatic transmission
fluid) as the base oil, the resulting mixture is red and therefore looks awesome.

Storage

Acetone can melt plastic and it's incredibly flammable so be careful what you put it in and where you store it.
The can that you use shouldn't have any plastic parts which could dissolve and it should be air tight.
If it's not air tight, eventually your alcohol base will just disappear.

Conclusion

Having used PlusGas for the majority of my work, I am impressed by how well the home made fluid works.
If you have spare oil and your lady friend has acetone nail varnish, you don't have to spend money.

Let me know how you get on and what you use.


Click if Info Helpful

Contact us about mod
Cookies
Terms and Conditions
Site Disclaimer

© Copyright 2013, all rights reserved.