Engine Oil

for 1984 Cadillac DeVille 350ci V8 Diesel · RWD

Fluid Type

15W-40 diesel engine oil

Spec: API CD

Capacity

7qt

6.62 L

Drain & Refill

7 qt

6.62 L

Change Interval

3,000 mi

4,827 km

Notes

Oldsmobile 350 diesel V8 (5.7L LF9). Capacity with filter. Use quality diesel-rated oil and change frequently due to fuel contamination issues common to this engine.

Buy on Amazon

As an Amazon Associate, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Other fluid systems on this vehicle

Automatic Transmission

12 qt

Washer Fluid

3 qt

🔌 Need this data in your app? It's all in the free API →

🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.

Stuck on this repair? Take it to The Diag Desk — ask a master tech about this exact car → real human answer within 24h, never AI

Share:X Reddit FB WhatsApp Threads Email

⚠ STILL BEHIND THE PAYWALL

The 1984 Cadillac DeVille repair data is incomplete because no one has sponsored it yet. For $99, we generate the full step-by-step procedures, then fact-check them with a second AI pass and your expert review. Your name on every procedure, permanently.

The same data would cost $169/mo from Mitchell1 or $30/year from ALLDATAdiy — and you'd be renting access, not freeing it. Sponsor once, free forever.

Sponsor the Cadillac DeVille — $99 →

Building an app?

Free API access to all this data — 20 requests/day, no card required.

Get an API key →

Run a shop?

Manage repairs, estimates, and customers with ShopBase — $249/mo, all features included.

Try ShopBase →