These days I use CRC Freeze off, it’s in a blue can. It’s works extremely well, as good as kroil.
Pros: works extremely well
Owner reviews for penetrating oil
Manufacturers
Wurth boltex is the best I’ve ever used.
Pros: the best
Best one I've used is Wurth brand. Rost Off
Pros: best one
My shop uses ac Delco stuff. Works really well if you give it time to work its way down. Works better than wd40 and pb blaster which are both worthless.
Pros: works really well
Cons: needs time to work
BG informed works awesome! One of the best out there!
Pros: works awesome
CRC freeze off has the worked the best even over kroil. It doesn’t last long but man it’s gets down into stuff.
Pros: works the best
Cons: doesn’t last long
I did that with my license plate screws, let it sit overnight and they came right out
Pros: screws came right out
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Owner reviews for penetrating oil
As of March 2026, PartReview has 7 reviews across 5 manufacturers for penetrating oil. 5 of them have enough reviews to participate in the ranking of this part.
Popular manufacturers of penetrating oil
The most popular manufacturers of penetrating oil on PartReview include:
- CRC - 2 reviews. PR Score: not available yet, average rating: 5.0.
- Wurth - 2 reviews. PR Score: not available yet, average rating: 5.0.
- BG - 1 review. PR Score: not available yet, average rating: 5.0.
- AC DELCO - 1 review. PR Score: not available yet, average rating: 4.0.
- WD-40 - 1 review. PR Score: not available yet, average rating: 5.0.
Most opinions about performance and characteristics of penetrating oil are collected on these pages.
Top manufacturers of penetrating oil
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Comparisons of penetrating oil manufacturers
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