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#4049698 - 03/26/16 07:08 PM Best Penetrating Oil for Rusted Automotive Fasteners?
SubLGT Offline


Registered: 01/31/06
Posts: 2622
Loc: Idaho
I have been using PB Blaster for dealing with moderately rusted automotive fasteners and rusted joints and splines. So far so good.

But are there better products out there, that every DIYer should have?

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#4049700 - 03/26/16 07:14 PM Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT]
Wolf359 Offline


Registered: 04/27/12
Posts: 4155
Loc: MA
Kroil.

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#4049701 - 03/26/16 07:17 PM Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: Wolf359]
JC1 Online   content


Registered: 11/29/08
Posts: 2647
Loc: Oshawa, Ontario Canada
Mix of ATF and acetone.
_________________________
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1997 Honda Civic CX 5w-30 PPPP/Mahle Filter

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#4049704 - 03/26/16 07:19 PM Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: Wolf359]
mehullica Offline


Registered: 08/19/09
Posts: 527
Loc: Modesto,CA
Originally Posted By: Wolf359
Kroil.
+100


Edited by mehullica (03/26/16 07:19 PM)

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#4049718 - 03/26/16 07:31 PM Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT]
KD0AXS Offline


Registered: 11/13/12
Posts: 2408
Loc: Nowthen, MN
+8643218764679 on Kroil.

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#4049726 - 03/26/16 07:45 PM Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT]
Rand Offline


Registered: 08/20/03
Posts: 12358
Loc: NE,Ohio
if kroil doesnt do it.. you usually need something more impressive... like a torch.
_________________________
2017 Jeep Cherokee Trailhawk V6

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#4049739 - 03/26/16 08:03 PM Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: mehullica]
spasm3 Offline


Registered: 05/30/10
Posts: 8179
Loc: North Carolina
Originally Posted By: mehullica
Originally Posted By: Wolf359
Kroil.
+100


Kroil is the best i've used.
_________________________
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#4049745 - 03/26/16 08:09 PM Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT]
bullwinkle Offline


Registered: 10/09/04
Posts: 7252
Loc: Cincinnati, OH, USA
Seafoam's Deep Creep has worked pretty well for me.
_________________________
06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 15 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)

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#4049746 - 03/26/16 08:10 PM Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: Wolf359]
Astro14 Offline


Registered: 10/10/10
Posts: 8230
Loc: Virginia Beach
Originally Posted By: Wolf359
Kroil.


+1
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#4049750 - 03/26/16 08:11 PM Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT]
buck91 Offline


Registered: 04/17/12
Posts: 2360
Loc: West Michigan
Was never willing to pay the premium for kroil, finally broke down and bought a can last year. It really does seem significantly more effective than the pb blaster I used to use.

Liquid wrench works well, too. Not quite as effective as kroil.
_________________________
2011 F150 4x4 5.0L
1996 Mustang GT 5spd/ragtop

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#4049772 - 03/26/16 08:36 PM Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT]
ejes Offline


Registered: 01/11/16
Posts: 302
Loc: Kansas
Kroil (Aerokroil) here as well. Have tried others (PB, WD-40, Liquid Wrench, etc.), but Kroil has always worked better.

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#4049780 - 03/26/16 08:42 PM Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT]
rooflessVW Offline


Registered: 12/24/11
Posts: 3383
Loc: North Carolina
ATF + acetone.
_________________________
"Zed's dead baby, Zed's dead."

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#4049788 - 03/26/16 08:47 PM Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: rooflessVW]
CT8 Offline


Registered: 10/09/14
Posts: 10268
Loc: Idaho
Originally Posted By: rooflessVW
ATF + acetone.
+1

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#4049821 - 03/26/16 09:32 PM Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT]
DerbyDave Offline


Registered: 10/27/15
Posts: 206
Loc: KS
On fasteners that permit it.. Copious amounts of heat
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1997 Ford Taurus
2007 Honda Ridgeline
2003 Suzuki GZ250
1986 Suzuki Cavalcade
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#4049858 - 03/26/16 10:25 PM Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT]
Leo99 Offline


Registered: 03/30/14
Posts: 2681
Loc: NJ
I use the WD40 rust penetrant. It's a special kind of WD40.
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Without data you're just another person with an opinion. W. E. Deming

2003 Corolla 250,000 miles
2004 Rav4 333,000 miles
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