Choosing the right oil additive can help a 5.7 Hemi run smoother, reduce wear, and maintain engine cleanliness. This guide highlights five well-regarded options that address lubrication at high RPM, oil consumption, break-in protection, and overall engine durability. Each product below includes key features and a direct link to the Amazon listing for quick comparison. Use this information to decide which additive best fits your driving needs and maintenance schedule.
| Product | Brand | Key Benefit | Approximate Use |
|---|---|---|---|
| Liqui Moly MoS2 Anti-Friction Engine Treatment | Liqui Moly | High-load friction film for smoother operation | All engines, 300 ml |
| LIQUI MOLY Motor Oil Saver | Liqui Moly | Reduces oil consumption and leaks | All engines, 300 ml |
| BestLine Racing Engine Oil Additive | DNL | Drastically lowers friction and noise | Gas and diesel engines |
| Red Line Break-In Additive | Red Line | Anti-wear protection during break-in | New or rebuilt engines, 16 oz |
| Lucas Complete Engine Treatment | Lucas Oil | Comprehensive cleaning and lubrication | All engines, 16 oz |
Liqui Moly MoS2 Anti-Friction Engine Treatment
Liqui Moly MoS2 Anti-Friction Engine Treatment is a universal motor oil additive sold in a 300 ml can. It forms a high-load lubricating film on friction surfaces to reduce wear and noise, particularly at high RPM. The MoS2-based formula is designed to improve engine smoothness and longevity by lowering metal-to-metal contact. This option is suitable for a wide range of engines, including gasoline V8s like the 5.7 Hemi, and aims to deliver noticeable improvements in engine feel and sound under demanding conditions.
LIQUI MOLY Motor Oil Saver
LIQUI MOLY Motor Oil Saver is a 300 ml additive designed to reduce oil consumption by addressing piston rings and valve guides. It also helps prevent blue or smoky exhaust and seals leaks related to elastomeric components. For a 5.7 Hemi, this option may support longer intervals between top-offs and help maintain cleaner operation, especially in older or high-mileage engines where oil control is a concern.
BestLine Racing Engine Oil Additive
BestLine Racing Engine Oil Additive, sold under the DNL brand, emphasizes a high-concentration formula designed to reduce friction and noise by creating an ultra-low friction film on top of a Diamond Nano-coating. It is marketed for use across a broad range of vehicles, including cars, trucks, motorcycles, and high-performance machines. It claims superior heat resistance up to 1,800°F (982°C) and universal compatibility across gasoline, diesel, hybrid, and racing engines, which can be relevant for a 5.7 Hemi subject to heavy use or performance tuning.
Red Line 81403 Engine Oil Break-In Additive
Red Line Break-In Additive is designed to be used during initial engine break-in or with new camshafts and lifters that require extra protection. The 16-ounce bottle treats up to 12 quarts of motor oil, and the product includes detergents for improved lubricity and piston ring seating. It aims to safeguard critical wear areas during startup and early operation, delivering antiwear protection as parts settle in after construction or rebuilds.
Lucas Oil Complete Engine Treatment
Lucas Oil Complete Engine Treatment provides a broad approach to engine health by cleaning and lubricating the entire fuel system, from the tank to injectors. It also targets deposits on intake valves and cylinder heads and lubricates upper cylinder walls, compression rings, and oil rings. This type of additive can help maintain efficiency and reduce deposit-related performance issues over time, supporting smoother operation in a 5.7 Hemi with higher mileage or varied driving patterns.
REV-X Zinc ZDDP Oil Additive
REV-X Zinc ZDDP Oil Additive provides an anti-wear layer at friction points to prevent metal-to-metal contact, particularly useful during engine break-in. It incorporates ZDDP for protection in flat-tappet engines and is marketed for use when extra protection is needed, especially during startup and initial oil changes after a rebuild or major maintenance. This option is positioned as a targeted solution for heightened engine protection in older or performance-oriented builds.
Buying Guide for Oil Additives for a 5.7 Hemi
Key considerations when selecting an oil additive for a 5.7 Hemi include compatibility, intended use, and maintenance goals. The following perspectives help determine the best fit:
- Lubrication needs: If the engine experiences higher RPM operation, thorough friction reduction and film strength (as with MoS2 or Diamond Nano-based formulas) can improve smoothness and wear resistance.
- Oil consumption and leaks: For engines that consume oil or exhibit valve seal issues, products designed to reduce consumption and seal leaks may offer practical benefits.
- Break-in and wear protection: New or rebuilt engines benefit from break-in additives that form robust antiwear layers during initial operation, protecting camshafts and lifters.
- Vehicle type and usage: Universal formulas tend to work across gasoline and diesel platforms, but high-performance or classic engines may benefit from specialized products with higher heat resistance and detergency.
- Oil change schedules: Concentrated formulas may extend or reduce the frequency of oil changes depending on usage; always align with manufacturer recommendations and oil type.
- Detergents and deposits: Some additives focus on cleaning intake valves and fuel system deposits, which can improve efficiency and fuel economy over time.
- Compatibility and materials: Ensure the additive is compatible with your engine’s seals, gaskets, and current oil type to avoid unintended effects.
The options listed above provide a spectrum of approach—ranging from friction reduction to break-in protection and system-wide cleaning. For the 5.7 Hemi, consider your driving profile, maintenance history, and whether you prioritize immediate noise reduction, long-term wear protection, or a combination of both. Always follow the product’s usage instructions and consult your vehicle’s manual or a qualified technician if you are unsure about compatibility with your oil grade or engine condition.