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 L112-12PK Liquid Wrench Penetrating Oil (12/11Oz)

Liquid Wrench L112-12PK Liquid Wrench Penetrating Oil (12/11Oz)

Product ID: 7101313

Details

Brand
Liquid Wrench
Item Weight
15.39 ounces
Liquid Volume
11 Fluid
Material
Plastic
Package Information
Bottle

⏳Long-lasting Cerflon lubrication

🌿0% VOC, low odor formula

🛠️12-pack for bulk projects

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VT48312

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In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Brand
Liquid Wrench
Item Weight
15.39 ounces
Liquid Volume
11 Fluid

Description

🛠️ Unlock stuck parts like a pro—because smooth moves never go out of style.

BULK POWERHOUSE - 12 bottles of 11oz penetrating oil to keep your toolkit stocked and ready for any stuck bolt emergency.
TRUSTED PERFORMANCE - Ranked #3 in Automotive Assembly Lubricants with 4.7-star reviews—join thousands of pros who rely on Liquid Wrench.
EFFORTLESS RUST RELEASE - Penetrates deep to loosen rusted nuts, bolts, and locks with minimal elbow grease—because your time is valuable.
PRECISION SPRAY CONTROL - Includes a straw for targeted application in hard-to-reach spots, ensuring no drop goes to waste.
CLEAN SAFE APPLICATION - Low-odor, 0% VOC formula that’s gentle on painted and metal surfaces—no damage, just smooth operation.

Liquid Wrench L112-12PK is a 12-pack of 11oz penetrating oil bottles designed to effortlessly loosen rusted or stuck bolts, nuts, and locks. Featuring a low-odor, 0% VOC formula with Cerflon solid lubricant, it provides long-lasting lubrication without damaging painted or metal surfaces. Trusted by professionals and DIYers alike, it includes precision spray straws for targeted application and ranks among the top automotive assembly lubricants for reliable, consistent performance.

Specifications

ASIN	B00BGSF8XE
Best Sellers Rank	#4,102 in Automotive ( See Top 100 in Automotive ) #5 in Automotive Assembly Lubricants
Brand	Liquid Wrench
Brand Name	Liquid Wrench
Container Type	Bottle
Customer Reviews	4.7 out of 5 stars 2,238 Reviews
Global Trade Identification Number	00078698408804
Item Form	Oil
Item Weight	0.96 Pounds
Liquid Volume	11 Fluid Ounces
Manufacturer	Liquid Wrench
Material	Plastic
Model Number	L112-12PK
Number of Items	12
Package Information	Bottle
Part Number	L112-12PK
Recommended Uses For Product	Penetrating Oil
Specific Uses For Product	Prevent Corrosion
UPC	078698408804
Unit Count	132.0 Ounce
Warranty Description	90 Day

Reviews

D**)

17.01.2026

S**H

13.06.2025

A**R

26.03.2026

Z**K

21.10.2025

N**A

1.02.2013

D**E

18.03.2026

S**E

9.04.2026

V**Y

21.02.2026

N**I

29.01.2022

R**N

30.07.2018

S**R

6.03.2026

T**S

30.05.2018

J**N

27.02.2019

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