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🛢️ Elevate your diesel’s durability—because your engine deserves the best.
Schaeffer Manufacturing’s SynShield Durability Advantage 15W-40 is a premium synthetic blend diesel engine oil engineered for extreme-duty protection. Featuring advanced oxidation resistance, superior soot dispersal, and friction modifiers like Micron Moly, it extends engine life and maintains viscosity under severe conditions. Ideal for modern emission-compliant diesel engines, this 1-gallon bottle delivers proven performance that keeps engines quieter, smoother, and more efficient mile after mile.







| ASIN | B06VVXGSM7 |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #10,662 in Automotive ( See Top 100 in Automotive ) #144 in Motor Oils |
| Brand Name | Schaeffer Manufacturing Co |
| Compatible with Vehicle Type | Car, Truck |
| Container Type | Bottle |
| Customer Reviews | 4.8 4.8 out of 5 stars (407) |
| Global Trade Identification Number | 00744954027538 |
| Included Components | one bottle engine oil |
| Item Type Name | SynShield |
| Liquid Volume | 128 Fluid Ounces |
| Manufacturer | Schaeffer Manufacturing Co. |
| Manufacturer Part Number | 0700CK4-006S |
| Manufacturer Warranty Description | Check with manufacturer. |
| Model Number | 0700CK4-006S |
| Size | 1 Gallon |
| UPC | 744954027538 |
| Unit Count | 1.0 Count |
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