Driven DZL 15W-40 is a heavy-duty synthetic-blend diesel engine oil created in response to customer demand for a Driven diesel option. It provides wear protection for modern high-performance diesel pickups, RVs, and motorhomes working through severe duty cycles such as towing heavy loads, climbing grades, and extended idle. It is API licensed CK-4 and CI-4 Plus and meets or exceeds several earlier diesel and OEM specifications.
Specifications:
- Product line: Driven DZL
- Viscosity grade: 15W-40
- Oil type: Synthetic Blend
- API service: Licensed CK-4 / CI-4 Plus (also meets CJ-4, CI-4, API SN)
- Container: 1 gal jug
- Part number: 30408
Applications:
- Modern high-performance diesel pickups, RVs, and motorhomes.
- Severe-duty use including heavy towing, steep grades, and long idle periods.
- On-road and off-road diesel service.
FAQ
Is Driven DZL API certified?
Yes. DZL 15W-40 is API licensed CK-4 and CI-4 Plus, and Driven states it also meets or exceeds CJ-4, CI-4, and API SN.
What vehicles is DZL for?
It is formulated for modern high-performance diesel pickups, RVs, and motorhomes, including those running severe duty cycles.
Is DZL a full synthetic?
No. DZL is a synthetic-blend 15W-40 heavy-duty diesel engine oil.
Can DZL handle heavy towing?
Yes. Driven positions it for extreme duty cycles such as towing heavy loads, climbing steep grades, and long idle periods.

