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Best Penetrating Oil for Rusted Automotive Fasteners? #4049698
03/26/16 07:08 PM
03/26/16 07:08 PM
Joined: Jan 2006
Posts: 2,648
Idaho
SubLGT Offline OP
SubLGT  Offline OP
Joined: Jan 2006
Posts: 2,648
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?

Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT] #4049700
03/26/16 07:14 PM
03/26/16 07:14 PM
Joined: Apr 2012
Posts: 5,142
MA
Wolf359 Online content
Wolf359  Online Content
Joined: Apr 2012
Posts: 5,142
MA
Kroil.

Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: Wolf359] #4049701
03/26/16 07:17 PM
03/26/16 07:17 PM
Joined: Nov 2008
Posts: 3,156
Oshawa, Ontario Canada
JC1 Offline
JC1  Offline
Joined: Nov 2008
Posts: 3,156
Oshawa, Ontario Canada
Mix of ATF and acetone.


2015 Grand Caravan SXT Plus 5w-20 PPPP/Fram Ultra Filter
1997 Honda Civic CX 5w-30 Shell Conventional/Fram Ultra Filter
Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: Wolf359] #4049704
03/26/16 07:19 PM
03/26/16 07:19 PM
Joined: Aug 2009
Posts: 575
Modesto,CA
mehullica Offline
mehullica  Offline
Joined: Aug 2009
Posts: 575
Modesto,CA
Originally Posted By: Wolf359
Kroil.
+100

Last edited by mehullica; 03/26/16 07:19 PM.
Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT] #4049718
03/26/16 07:31 PM
03/26/16 07:31 PM
Joined: Nov 2012
Posts: 2,458
Nowthen, MN
KD0AXS Offline
KD0AXS  Offline
Joined: Nov 2012
Posts: 2,458
Nowthen, MN
+8643218764679 on Kroil.

Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT] #4049726
03/26/16 07:45 PM
03/26/16 07:45 PM
Joined: Aug 2003
Posts: 12,896
NE,Ohio
Rand Offline
Rand  Offline
Joined: Aug 2003
Posts: 12,896
NE,Ohio
if kroil doesnt do it.. you usually need something more impressive... like a torch.


2019 Jeep Cherokee Trailhawk 2.0T
Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: mehullica] #4049739
03/26/16 08:03 PM
03/26/16 08:03 PM
Joined: May 2010
Posts: 9,047
North Carolina
spasm3 Online content
spasm3  Online Content
Joined: May 2010
Posts: 9,047
North Carolina
Originally Posted By: mehullica
Originally Posted By: Wolf359
Kroil.
+100


Kroil is the best i've used.


13 elantra 70k 5w30 QSUD
03 chevy avalanche79k synpwr 10w30
01 saturnsc1 185k synpwr rebuilt
17 mazda cx-5 5600 miles m1 0w30
Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT] #4049745
03/26/16 08:09 PM
03/26/16 08:09 PM
Joined: Oct 2004
Posts: 7,968
Cincinnati, OH, USA
bullwinkle Offline
bullwinkle  Offline
Joined: Oct 2004
Posts: 7,968
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), 18 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)
Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: Wolf359] #4049746
03/26/16 08:10 PM
03/26/16 08:10 PM
Joined: Oct 2010
Posts: 8,790
Virginia Beach
Astro14 Offline
Astro14  Offline
Joined: Oct 2010
Posts: 8,790
Virginia Beach
Originally Posted By: Wolf359
Kroil.


+1


32 Packard 15W40
02 Volvo V70 T5 0W40 M1
02 Volvo V70 XC 0W40 Edge
05 MB S600 0W40 M1
16 Tundra 1794 5W30 Pennzoil Ultra
Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT] #4049750
03/26/16 08:11 PM
03/26/16 08:11 PM
Joined: Apr 2012
Posts: 2,568
West Michigan
buck91 Offline
buck91  Offline
Joined: Apr 2012
Posts: 2,568
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
Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT] #4049772
03/26/16 08:36 PM
03/26/16 08:36 PM
Joined: Jan 2016
Posts: 321
Kansas
ejes Offline
ejes  Offline
Joined: Jan 2016
Posts: 321
Kansas
Kroil (Aerokroil) here as well. Have tried others (PB, WD-40, Liquid Wrench, etc.), but Kroil has always worked better.

Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT] #4049780
03/26/16 08:42 PM
03/26/16 08:42 PM
Joined: Dec 2011
Posts: 4,738
North Carolina
rooflessVW Offline
rooflessVW  Offline
Joined: Dec 2011
Posts: 4,738
North Carolina
ATF + acetone.


"Zed's dead baby, Zed's dead."
Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: rooflessVW] #4049788
03/26/16 08:47 PM
03/26/16 08:47 PM
Joined: Oct 2014
Posts: 11,838
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 11,838
Idaho
Originally Posted By: rooflessVW
ATF + acetone.
+1


2015 Ford F150 2.7
2018 Ford F350 6.2
Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT] #4049821
03/26/16 09:32 PM
03/26/16 09:32 PM
Joined: Oct 2015
Posts: 221
KS
DerbyDave Offline
DerbyDave  Offline
Joined: Oct 2015
Posts: 221
KS
On fasteners that permit it.. Copious amounts of heat


1997 Ford Taurus
2007 Honda Ridgeline
2003 Suzuki GZ250
1986 Suzuki Cavalcade
2014 Nissan LEAF (Gone)
Re: Best Penetrating Oil for Rusted Automotive Fasteners? [Re: SubLGT] #4049858
03/26/16 10:25 PM
03/26/16 10:25 PM
Joined: Mar 2014
Posts: 3,255
NJ
Leo99 Offline
Leo99  Offline
Joined: Mar 2014
Posts: 3,255
NJ
I use the WD40 rust penetrant. It's a special kind of WD40.


Without data you're just another person with an opinion. W. E. Deming

2003 Corolla 250,000 miles
2004 Rav4 359,000 miles
2015 Camry 59,000 miles
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