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
Reviews of AC DELCO penetrating oil
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3 votes
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1 review
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What we know about AC DELCO penetrating oil
The brand is registered in USA. Official website: http://www.acdelco.com/.
In March 2026, PartReview does not yet have a formed opinion of AC DELCO penetrating oil. You can help by adding a review for AC DELCO penetrating oil.
Currently there are 1 review and 3 votes. Average rating — 4 out of 5. Vote balance: 3 up, 0 down.
Users also evaluated the qualities of AC DELCO penetrating oil:
- Loosening help - frees stuck bolts more easily - rated positively. 4.5 points out of 5.
- Smell - odor is not overpowering during use - no rating yet
- Staining - does not leave hard-to-clean marks - no rating yet
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