Engine Oil

for 1979 Jaguar XJS 5.3L V12 · RWD

Fluid Type

10W-40 or 20W-50 mineral oil

Spec: API SF or SG

Capacity

13.5qt

12.77 L

Drain & Refill

12 qt

11.35 L

Change Interval

3,000 mi

4,827 km

Data quality

Book-style estimate

Not yet expert-verified. Have the real number? Correct it below — takes 30 seconds.

Notes

With filter change. V12 engines require substantial oil capacity. Early XJS models specified mineral oil with higher viscosity grades typical of the era.

Buy on Amazon

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

Other fluid systems on this vehicle

Automatic Transmission

11 qt

Washer Fluid

4 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. 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 1979 Jaguar XJS 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 Jaguar XJS — $99 →

Building an app?

Free API access to all this data — 10 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 →