Description
TECTYL® 915W40E2 is a premium dual-purpose internal combustion engine oil and corrosion preventive compound manufactured by Daubert Chemical Company. Specifically designed for both new and rebuilt engines, this high-quality product serves as both a fully operational engine oil and a superior preservative coating that protects engine parts during covered shipment and indoor storage. The product forms an oily, translucent protective film that meets the requirements of Military Specification MIL-PRF-21260E, Grade 15W40, QPL Reference Number MP-432, ensuring exceptional performance and long-term protection for up to 5 years in appropriate storage conditions.
Properties
- Dry Film Color: Translucent, oily film
- Film Type: Operational engine oil with preservative properties
- Flash Point: 222°C (C.O.C., Finished Oil)
- Weight per Gallon: 7.4 lbs/gallon (887 grams/L)
- Specific Gravity: 0.890 @ 15.6°C
- API Gravity: 28.2 (27.2-29.2)
- Viscosity: 15.01 cST @ 100°C, 113.0 cST @ 40°C
- Pumpability: 29,100 mPa.s @ -25°C
- Pour Point: -39°C
- Recommended Dry Film Thickness: 0.4 mils (10 microns)
- Theoretical Coverage: 4,010 sq.ft/gallon (98.4 sq.meters/L)
- Chemical Composition:
- Sulfated Ash: 1.31%
- Sulfur: 0.681% Mass
- Phosphorous: 0.114% Mass
- Calcium: 0.291% Mass
- Zinc: 0.189% Mass
- Nitrogen: 0.094% Mass
- Magnesium: 0.001% Mass
- National Stock Numbers (NSN):
- Bulk: 9150-01-359-8567
- 55-Gallon Drum: 9150-01-293-2772
- 5-Gallon Pail: 9150-01-293-7696
Key Features
- Military-Grade Protection: Qualified Product Listed (QPL) under MIL-PRF-21260E, meeting SAE Grade 15w-40 requirements
- Dual-Purpose Formula: Functions as both a fully operational engine oil and superior corrosion preventive
- Long-Term Preservation: Provides up to 5 years of protection for engines during indoor or undercover storage
- Complete Operational Oil: Fully functional for current production engines without requiring change until first scheduled maintenance
- Metal Compatibility: Does not corrode copper-lead alloy bearings and metals, ensuring component integrity
- Cold Weather Performance: Excellent pumpability at low temperatures (-25°C)
- Balanced Additive Package: Contains optimal levels of detergents, dispersants, and anti-wear additives
- Broad Compatibility: Works with lubricating oils qualified under MIL-PRF-21260E, MIL-PRF-2104, MIL-PRF-46167, and MIL-L-46152E
- Replacement Product: TECTYL® 915W40E2 replaces the older TECTYL® 915W40E formulation for improved performance
Ideal Applications
Military and Defense:
- Preservation of military vehicle engines during deployment or storage
- Engine protection for naval and aviation support equipment
- Meeting military specifications for engine preservation and lubrication
Engine Manufacturing:
- Factory fill for all new and rebuilt engines
- Break-in oil for freshly assembled engines
- Engine preservation during manufacturing and assembly processes
Power Generation:
- Preservative for diesel generators with HPI Fuel systems in storage for 60 to 24 months
- Protection of standby power equipment during periods of inactivity
- Ensuring immediate readiness of emergency power systems
Transportation and Industrial Storage:
- Protection of engine components during covered shipment
- Preservation of engines during long-term indoor storage (up to 5 years)
- Maintaining engine integrity between assembly and installation
Application Guidelines
TECTYL® 915W40E2 is formulated to be used as supplied without thinning. Ensure uniform consistency prior to use, though continued stirring is generally not required.
Surface Preparation:
- For maximum performance, metal surfaces must be clean, dry, and free of rust, oil, and mill scale
- Recommended substrate temperature during application: 50-95°F (10-35°C)
Application Methods:
- Use as factory fill and break-in oil for all new and rebuilt engines
- Can be used as a completely operational oil for current production engines
- No need to change until first scheduled oil change specified by engine manufacturer
- For preservative coating applications, apply to clean engine parts to protect during shipment and storage
Important Notes:
- If product thickens due to cold storage or loss of solvent, contact Daubert Chemical Company
- DO NOT THIN the product as incorrect thinning will affect film build, dry time, and performance
- The addition of any product over or under this coating is not recommended due to potential chemical incompatibility
Storage and Handling
- Store in appropriate engine oil containers at moderate temperatures
- Removal methods include TECTYL® HPS solventborne thinner, vapor degreasing, hot alkaline wash, or low-pressure steam
- Can be removed from fabrics by normal dry cleaning procedures
- Avoid using chlorinated or highly aromatic solvents when removing from painted surfaces
- Refer to Daubert’s Material Safety Data Sheet for complete health and safety instructions
- For technical support: 1-800-688-0459 or visit www.daubertchemical.com