TLDR Review: BlueDevil Rear Main Sealer
Published: March 18th, 2025
Pros
- •Effectively stopped an oil leak in various vehicles, including a 2014 Chevy Cruze and a 2004 Saturn Vue.
- •Eliminated squealing noises related to the oil seal.
- •Saved users over $800 in repair costs by preventing the need for seal replacement.
- •Resulted in a dry engine after two weeks, indicating lonasting effects.
- •Easy to use without the need to drain existing oil, making it convenient.
- •Specifically formulated to rejuvenate seals and address leaks at the source.
- •Highly recommended by experienced automotive professionals.
- •Proven effective in a wide range of vehicles, including classic cars and sports cars.
- •Achieved lonasting results with no leaks after 50,000 miles in some cases.
Cons
- •Some users reported engine issues, such as oil pressure drops and warning lights.
- •Similar results reportedly achievable with less expensive alternatives like brake fluid due to similar ingredients.
- •Effectiveness may vary, with some reviews indicating it works only about 50% of the time.
Bottom Line
BlueDevil Rear Main Sealer is highly praised for its effectiveness in stopping leaks and saving on costly repairs. It's especially recommended for car enthusiasts and professionals who deal with classic or high-performance vehicles. However, potential users should be aware of possible engine issues and that results may vary, as indicated by mixed experiences.
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