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#3274207 - 02/07/14 08:37 PM Fluid Film for stuck fasteners
buck91 Offline


Registered: 04/17/12
Posts: 640
Loc: West Michigan
Just curious if anyone has tried fluid film as a penetrating oil for stuck nuts and bolts? Figured it creeps like crazy after application, but does so rather slowly, so maybe given time it would work well but that might mean quite a bit of time.
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#3274306 - 02/07/14 09:37 PM Re: Fluid Film for stuck fasteners [Re: buck91]
JHZR2 Offline



Registered: 12/14/02
Posts: 34235
Loc: New Jersey
Far too viscous. Id use something like PB, kroil, or apparently ATF thinned with acetone works too...

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#3274316 - 02/07/14 09:44 PM Re: Fluid Film for stuck fasteners [Re: buck91]
demarpaint Offline


Registered: 07/03/05
Posts: 21723
Loc: NY
Kroil would be my first choice followed by PB Blaster.
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#3274356 - 02/07/14 10:23 PM Re: Fluid Film for stuck fasteners [Re: buck91]
oilboy123 Offline


Registered: 12/05/03
Posts: 6657
Loc: Everett, Washington
I don't think that's the primary application of the product. Other things would be better.
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#3308420 - 03/11/14 03:33 PM Re: Fluid Film for stuck fasteners [Re: buck91]
camelCase Offline


Registered: 07/11/13
Posts: 168
Loc: Southeastern, USA
Typically, you want a pretty low viscosity to get good creeping. Think that higher viscosity means more shear is needed to move the fluid, so with low viscosity the fluid will continue to move even with a minute amount of shear (gravity in this case).

I'd go with an actual formulated penetrating spray lube. There are so many uses for a good can of PSL that it's always worth the cost to pickup a can if you don't have any.

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#3308516 - 03/11/14 05:07 PM Re: Fluid Film for stuck fasteners [Re: buck91]
buck91 Offline


Registered: 04/17/12
Posts: 640
Loc: West Michigan
Well the situation I had more in mind was on older, rusty nuts and bolts that you know you will need to remove one day, but there is no current need.

For example, strut bolts or other such fasteners on a used car which you know will get replaced eventually but that time has yet to come. To me, it would seem FF would creep nicely over time while not evaporating and rinsing off as readily as a penetrating oil. But that is untested.
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2011 F150 4x4 5.0L
1980 Yamaha XS850G

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