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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Description

🛠️ Unlock stuck secrets with precision and speed!

MADE IN THE USA - Quality you can trust, proudly manufactured domestically.
RAPID RUST RELEASE - Break free stuck parts in minutes with powerful fast-acting formula.
LOW VISCOSITY POWER - Flows easily to reach tight spots and deep corrosion.
VERSATILE MULTI USE - Ideal for nuts, bolts, and various metal parts—your all-in-one penetrant.
PRECISION APPLICATION - Includes a precision spray straw for targeted, mess-free use.

Liquid WrenchGunk L112/6 Super Penetrant Spray is an 11 oz aerosol lubricant designed to quickly loosen rusted nuts, bolts, and metal parts. Featuring a fast-penetrating solvent and a precision spray straw, this low-viscosity formula ensures targeted application and effective rust release. Proudly made in the USA, it’s a versatile essential for any professional or DIY toolkit.

Specifications

Material	liquid
Brand	Liquid Wrench
Package Information	Bottle
Liquid Volume	11 Fluid Ounces
Item Weight	0.25 Pounds
Recommended Uses For Product	Lubricant
Viscosity	Low Viscosity
Flash Point	56 Degrees Celsius
Item Form	Aerosol,Liquid,Spray
Global Trade Identification Number	00078698120157
Manufacturer	Liquid Wrench
Unit Count	11.0 Ounce
UPC	078698120157 094715759803
Number of Items	1
Model	.......
Item Weight	4 ounces
Product Dimensions	3 x 3 x 8 inches
Item model number	L112
Is Discontinued By Manufacturer	No
Exterior	Milled
Manufacturer Part Number	L112
Lift Type	.......
National Stock Number	3040-00-949-1713

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