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Penetrant 4 Fluid ounce(s) Penetrant

Ratings & Reviews for Blaster Penetrant 4 Fluid ounce(s) Penetrant

4.3
226
Review
 4.3 out of 5
238 Reviews


74% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this penetrating oil as the most effective solution for rusted, seized, or frozen bolts, with many calling results miraculous and noting it works faster and more reliably than competitors. Beyond breaking rust, reviewers appreciate its dual role as a light lubricant that leaves a protective film, preventing future seizing on hinges and mechanical parts. However, a significant frustration persists: spray cans frequently lose propellant pressure when one-third to one-half full, rendering remaining product unusable. Some mention strong odor requiring ventilation. Despite spray can defects, most customers consider this the industry standard for rust removal and keep multiple cans on hand.

Customer review summary generated by AI, including incentivized reviews.
238 Customer Reviews

works better than the mechanic at the shop

Would Recommend

took my car to Monro and they could not get the bolt out which held the spare tire in place. I bought PB blaster and sprayed the heck out of. I am a female senior citizen and I got the bolt out myself!

February 5, 2022
Verified Purchaser
Was this Review Helpful ?

Lousy cans

Would Not Recommend

Great product, lousy cans, Lost pressure, now I have a third of the can wasted since I can't get it out to be able to use it,you guys need to come up with a solution

November 24, 2021

From blastercorp.com

Like the new Pro Straw

Would Recommend

I won’t use anything but PB Blaster when I am replacing rotted out battery trays on a golf cart

September 28, 2021

From blastercorp.com

Prob.the best at unseizing nuts,etc.Cans go flat

Would Recommend

It is a great penetrating catalyst for sure, but the cans more often than not go flat on you. All the air leaks out aprox. half way thru the can leaving the rest unusable unless you rip it open & cut yourself as I have in the past.

August 4, 2021

From blastercorp.com

Response from Customer Service

Thank you for being a loyal customer. We apologize for your can's spray-out issue. Next time it happens please call us at #800-858-6605

Customer ServiceAugust 6, 2021

problem with spraying

Bought a can today based on online reviews. Silly question possibly but do your cans require more pressure than most aerosol sprays. After putting the valve in the upper locked position it requires way too much pressure. I can't use it as it is. Do I have a defective can?

July 19, 2021

From blastercorp.com

Response from Customer Service

Sorry for the inconvenience, please call our #800-858-6605 for further clarification of the issue so we can resolve it.

Customer ServiceAugust 6, 2021

Old tractor Parts

Would Recommend

I have been using Blaster PB Blaster for years. I am now trying the new chain lube, But I have a hard time finding other Blaster products

June 15, 2021

From blastercorp.com

Response from Customer Support

Hi Charley, if you are looking for a specific product, feel free to call our tech team @ 800-858-6605 and we can point you in the right direction. Goo...

Customer SupportJune 17, 2021

PB Blaster nozzle tip broke

Would Recommend

I'm satisfied with the product, but the spray cans are horrible. I finally finished my previous two cans of Blaster. Both cans lost pressure with about a third of the penetrate left. So, I punched a small hole in the cans and dribbled it were I needed it. I just bought an 18 oz can of Blaster. I was so excited to be able to spray rather than having to dribble the penetrate from a hole it the can. After only a few uses, the nozzle broke off. Since the can is still pressurized, I concerned ...

June 14, 2021

From blastercorp.com

Response from Customer Support

Hi Victor, We are sorry to hear this. Please call our tech support team @ 800-858-6605 so we can resolve this.

Customer SupportJune 16, 2021

Never lets me down~!

Would Recommend

I fill used eye dropper bottles with it and can have a small bottle in each tool box of which I have many and it's the handiest tool in the box~!!

May 12, 2021

From blastercorp.com

Does the job

Would Recommend

Blaster has saved me the aggravation of broken bolts and seized parts for years. Living in the rust belt makes one appreciate the true action of Blaster on rusted and corroded parts. An application on severely rusted parts a day or two before the job gives it the opportunity to soak deep and break free parts I never thought would happen

May 12, 2021

From blastercorp.com

Response from Customer Support

awesome! thanks for sharing and for being a loyal customer.

Customer SupportMay 14, 2021

Thanks for the straw!

Would Recommend

Been using this product to kill carpenter bees. Very Effective!! The straw lets me get up in their bore holes. 1 quick shot until it trickles back, and they're done! Next a sick dying bee stumbles out to fall to it's death! Best spray bomb I've found yet!

April 18, 2021

From blastercorp.com

good stuff

Would Recommend

Have used this product in the past and it works well at loosening frozen bolts and screws.

April 5, 2021
Verified Purchaser
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Excellent products

As a farmer, I have used most of the blaster products, from penetrating oil to the different greases. These products have added value to out farming operation. I would recommend the Blaster products for all industries. Have not been disappointed in any of their products.

March 31, 2021

From blastercorp.com

Response from Customer Support

so glad we are able to help! thanks for sharing your experience.

Customer SupportApril 1, 2021

Works great

Would Recommend

I've used it for many years, wouldn't use anything else. Nothing else compares

March 30, 2021

From blastercorp.com

Response from Customer Support

awesoem! thanks for being a loyal customer!

Customer SupportApril 1, 2021

Original O2 sensor replacements at 227,124 miles

Would Recommend

I bought my can of Blaster from my auto parts house when I purchased my the new O2 sensors for my 2004 GMC Envoy XUV. I had read about it while researching different techniques for removing O2 sensors. I had driven the Envoy a few hours earlier so, while not hot, it was barely warm. A professional mechanic at my parts house told me it was good stuff when I was purchasing it. One of the techniques mentioned here, or maybe elsewhere, suggested spray on, wait 15 minutes, spray again, wait 15 mi...

December 11, 2020

From blastercorp.com

Loses pressure too soon. Half bottle is not used.

Would Not Recommend

PB blaster is a great product. The original can was best. With this new nozzle I need to buy 2x the amount. I will not use this product anymore, as I now have to buy 2 cases a week for my shop. Please go back to original design.

November 25, 2020

From blastercorp.com

Response from Customer Support

hi there. sorry to hear this happened. please contact us @ 800-858-6605 so we can resolve this.

Customer SupportMarch 10, 2021

Excellent product 100%

Would Recommend

This is all I will buy and use I tried many other products but none compare to pb blaster it actually works and works amazing

November 18, 2020

From blastercorp.com

Nut buster

Would Recommend

I apply this liberally to my nuts. Nothing is better for busting a stuck nut. The only time PB blaster failed me was when I tried to change the spark plugs in my 2004 f150 fx4. But inal fairness. They say built Ford tough not Ford good, and it's PB blaster not pb miracle. 5/5 of PB won't bust that nut for you just skip to the part where you cut it off.

November 18, 2020

From blastercorp.com