Can i use liquid wrench penetrating oil on a large pvc water shut off valve? it runs to a waterfall. it has been buried for years and won't budge.

It should not hurt the pvc. If valve has been buried, I would first clear around it then clean it as best as possible. Take a hair dryer or heat gun(be very careful with heat gun) and warm, just warm valve, let cool and warm again. Apply liquid wrench let sit 10-20 mins. Use valve wrench to try and open valve, repeat id necessary. Heat done right(low) ought not cause any problems with liquid wrench which is a flammable.

After it dries, does anyone knows if it will prevent rust?

It does prevent rust. Been using liquid wrench for 40 years to prevent rust on my tools stored in my garage. After iI use a metal tool I spray it with Liquid Wrench. Never lost a tool due to rust.

Is it safe to use for breaking loose rusted stuck exhaust bolts? i know it is flammable but i figure i could clean it off after i get the bolts out.

It won a comparison between 5 other well known rust penetrators by a well know product evaluator on YouTube. But the ultimate exhaust bolt fix is heat if all else fails.

Does this form a foam when sprayed on ??? J. Payne

No, it is more like the consistency of WD-40. It bubble a little when you first spray it (probably from the propellant) but it leaves more of a thin (penetrating) oil residue.

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Liquid Wrench L112/6 Liquid Wrench Super Penetrant Spray - 11 oz

Liquid Wrench L112/6 Liquid Wrench Super Penetrant Spray - 11 oz

Product ID: 294904475

Details

Material
liquid
Brand
Liquid Wrench
Package Information
Tin
Liquid Volume
11 Fluid
Item Weight
0.25 Pounds

⚡fast penetrating solvent

🛠️11 oz precision spray

🇺🇸Made in USA quality

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₩115634

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Don’t get stuck—spray your way to smooth operations!

REFORMULATED CLEAR FORMULA - No mess, no residue—clean and effective lubrication for professional-grade maintenance.
VERSATILE MULTI USE PENETRANT - Perfect for garden hoses, clamps, pipes, and frozen mechanisms—one spray does it all.
PRECISION SPRAY STRAW INCLUDED - Target hard-to-reach spots for efficient application every time.
TRUSTED AMERICAN MANUFACTURING - Proudly made in the USA with premium lubricants designed for lasting corrosion protection.
UNLOCK RUSTED PARTS IN MINUTES - Fast-acting formula dissolves rust and frees stuck nuts, bolts, and locks with ease.

Liquid Wrench L112/6 is an 11 oz aerosol penetrant spray engineered to quickly dissolve rust and loosen stuck nuts, bolts, and locks. Featuring a precision spray straw and a fast-penetrating solvent, this versatile lubricant is reformulated with a clear formula for clean application. Made in the USA, it’s trusted by professionals for preventing corrosion and maintaining hardware with low viscosity for easy penetration.

Specifications

ASIN	B000ZZWNYG
Brand	Liquid Wrench
Brand Name	Liquid Wrench
Container Type	Tin
Country of Origin	USA
Customer Reviews	4.7 out of 5 stars 2,070 Reviews
Flash Point	56 Degrees Celsius
Global Trade Identification Number	00078698120157
Included Components	aerosol can
Item Form	Liquid
Item Type Name	......
Item Weight	0.25 Pounds
Liquid Volume	11 Fluid Ounces
Manufacturer	Liquid Wrench
Material	liquid
Material Type	liquid
Package Information	Tin
Recommended Uses For Product	grease, lubricant
Specific Uses For Product	Prevent Corrosion
UPC	078698120157 094715759803
Unit Count	11.0 Ounce
Viscosity	Low Viscosity
Warranty Description	Customer Satisfaction

Reviews

N**I

Damaged

29.01.2022

D**)

Effective and Affordable

17.01.2026

R**N

Quality product! Works as advertised!

30.07.2018

S**R

Keine große Wirkung

Nix besonderes bin eher enttäuscht. Der Rost der behandelten Teile wurde nicht richtig gelöst

6.03.2026

S**H

Rusty Bolt Removal

13.06.2025

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