Free API
Back to 1978 Mercury Cougar
Help
1978 MERCURY COUGAR
302ci V8•RWD•AUTOMATIC•gas
Founding sponsor spot is openYour name on every procedure for this vehicle, permanently.Sponsor — $99 →
Repairs0Labor474Torque7Fluid8DTC0Battery1Maintenance0Recalls0
Fluid · Automatic Transmission

Automatic Transmission

for 1978 Mercury Cougar 302ci V8 · RWD
Fluid Type
Type F ATF
Spec: Ford Type F
Capacity
11qt
10.41 L
Drain & Refill
5 qt
4.73 L
Change Interval
30,000 mi
48,270 km
Data quality
Book-style estimate
Not yet expert-verified. Have the real number? Correct it below — takes 30 seconds.

Notes

C4 or FMX transmission. Total capacity includes torque converter. Use Type F specifically, not Dexron.

Other fluid systems on this vehicle

🔌 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:XRedditFBWhatsAppThreadsEmail
⚠ STILL BEHIND THE PAYWALL
The 1978 Mercury Cougar 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 Mercury Cougar — $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 →