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 › Penetrating oil

Lopsided-Can-1761 24 Jul 2024, 18:56

Rating 5.0

Loosening help:

BG informed works awesome! One of the best out there!

Pros: works awesome

CRC › Penetrating oil

badcoupe 24 Jul 2024, 17:57

Rating 5.0

Loosening help:

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

WD-40 › Penetrating oil

Jerkules8 15 May 2023, 20:08

Rating 5.0

Loosening help:

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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