18+ years of lubrication experience
Deep Penetrations
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Liquid WrenchvsPB B'laster

Liquid Wrench and PB B'laster, claymation figures brawling in a miniature boxing ring
Liquid Wrench Penetrating Oil

Liquid Wrench

Old-school penetration. Low odor. No complaints from the neighbors.

Where It Wins

  • +Lower odor
  • +Better for indoor use
  • +Heritage brand since 1941
  • +Cling formula stays on surfaces
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PB B'laster Penetrating Catalyst

PB B'laster

The mechanic's choice. Penetrates deeper. Stays longer.

Where It Wins

  • +Stronger penetration
  • +Better on heavy automotive rust
  • +Non-evaporating formula
  • +More aggressive solvency
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Spec Comparison

SpecLiquid WrenchPB B'laster
Satisfaction89%96%
Penetration DepthMediumVery Deep
Price Tierbudgetbudget
Volume11 oz11 oz
Best Forindoor use, hinges, locksautomotive repair, rusted exhaust bolts, seized suspension
The Verdict

PB B'laster for serious rust. Liquid Wrench for indoor and light-duty work.

Liquid Wrench has the heritage, dating to 1941. PB B'laster has the raw power. If you're working on lightly corroded household items or need something with less odor for indoor use, Liquid Wrench is your pick. For automotive rust that's been building for years, PB B'laster's aggressive formula gets the nod.

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