SCHAEFFER’S SynShield® Durability Advantage 15W-40
$41.26 – $2,078.26Price range: $41.26 through $2,078.26
Schaeffer’s 15W-40 Diesel Engine Oil delivers advanced synthetic protection for heavy-duty diesel engines. Available in convenient 1-gallon jugs, it helps reduce engine wear, resist oxidation, control soot and deposits, improve cold-start performance, maintain viscosity in extreme temperatures, and protect against high-heat breakdown. Its high-performance formula promotes cleaner engines, longer service life, improved reliability, and dependable protection in on-road, off-road, agricultural, and commercial applications.
Description
Full synthetic heavy-duty diesel oil that offers strong fuel economy benefits without sacrificing engine durability.
Schaeffer’s SynShield® Durability Advantage 15W-40 CK-4 Full Synthetic Oil delivers premium synthetic performance for modern diesel engines operating in demanding conditions. Its advanced formulation helps protect against wear, deposits, and oxidation while supporting long engine life and reliable operation across a wide temperature range.
This heavy-duty engine oil provides excellent cold-start protection and maintains strong film strength under high heat and heavy loads. It helps keep engines clean and promotes consistent performance in on-road, off-road, agricultural, and commercial applications.
Schaeffer’s 15W-40 meets the needs of diesel owners who demand dependable protection and extended durability. Stock up with easy-to-handle gallon containers that simplify storage, transport, and maintenance while helping maximize engine efficiency and uptime.
Performance Benefits
- Improved wear protection – 85% less wear than conventional CJ-4 oils.
- High thermal and oxidative stability for greater resistance to viscosity thickening and the formation of deposits, sludge and varnish.
- Strong soot-busting, deposit-dispersing capability – 77% greater soot handling than conventional CJ-4 oils.
- Excellent shear stability for stay-in-grade performance throughout the oil drain interval.
- Superior low volatility characteristics to control oil consumption.
Improved and optimized engine durability and reliability during high mileage, hour accumulation situations. - Excellent protection against oil aeration and foaming.
Applications
Exceeds API Service Categories for heavy-duty-diesel engine oil: CK-4, CJ-4, CI-4, CI-4 Plus and older.
Schaeffer’s fully synthetic 15W-40 oil is suitable for use in emission compliant engines that utilize heavy exhaust gas recirculation (EGR) and exhaust after-treatment devices. These devices include diesel particulate filters (DPFs) with or without diesel oxidation catalysts (DOCs) and selective catalytic reduction (SCR).
Furthermore, SynShield® Durability Advantage 15W-40 Oil can also be used in low-emission certified diesel engines that are equipped with EGR. It is also used in older non-EGR containing diesel engines, and off-highway diesel engines.
- CK-4
- Cummins CES 20081, CES 20086
- Detroit Diesel DDC93K218, DDC93K222
- Ford WSS-M2C171-E, WSS-M2C171-F1
- JASO DH-2
- Mack EO-O Premium Plus, EOS-4.5
- MAN 3275, 3575
- MB 228.31
- Volvo VDS 4, VDS 4.5
Additional information
| Weight | N/A |
|---|---|
| Dimensions | N/A |
| Containers | Jug (1 gal), Box (12 qt), Box (6 gal), Tub (5 gal), Oil Drum (55 gal) |
| Oil Weights (multi-grade) | 15W-40 |
Related products
-


SCHAEFFER’S Citrol® Citrus Cleaner & Industrial Degreaser
$17.00 – $3,389.51Price range: $17.00 through $3,389.51 Select options This product has multiple variants. The options may be chosen on the product page -


SCHAEFFER #705 Supreme 7000™ 20W-50 Racing Oil Synthetic Blend (1 quart)
$13.07 Add to cart -


SCHAEFFER #131 Neutra™ Fuel Stabilizer 12-OZ
$9.30 Add to cart -

10631 Lucas Break-In Oil 30w (1) 5-QT
$31.72 Add to cart



