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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🔧 Don’t get stuck—spray your way to smooth moves!

COMPACT READY - 3 oz aerosol fits in your toolkit for on-the-go fixes anytime.
PINPOINT APPLICATION - Precision spray straw targets hard-to-reach spots with zero waste.
VERSATILE POWERHOUSE - Multi-purpose penetrant works on nuts, bolts, and all stubborn parts.
UNLOCK RUST IN MINUTES - Fast penetrating solvent dissolves rust and frees stuck bolts quickly.
TRUSTED AMERICAN CRAFTSMANSHIP - Proudly made in the USA for reliable, consistent performance.

Liquid Wrench Penetrating Oil is a low-viscosity, fast-acting aerosol lubricant designed to quickly loosen rusted nuts, bolts, and parts. Featuring a precision spray straw for targeted application, this 3 oz can is made in the USA and ideal for professionals and DIYers needing reliable, on-the-spot rust penetration and lubrication.

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Manufacturer	Liquid Wrench
Brand	Liquid Wrench
Model	.......
Product Dimensions	7.62 x 7.62 x 20.32 cm; 113.4 g
Item model number	L112
Is Discontinued By Manufacturer	No
Lift Type	.......
Item Dimensions L x W x H	7.6 x 7.6 x 20.3 cm
Viscosity	Low Viscosity
Color	yellow
Item Weight	113 g

Liquid Wrench Penetrating Oil 3 oz One Each, 11 oz. L112

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