248ci I6•RWD•MANUAL•gas

Repairs0 Labor441 Torque129 Fluid7 DTC0 Battery0 Maintenance0 Recalls0

Fluid · Manual Transmission

Manual Transmission

for 1955 GMC Panel 248ci I6 · RWD

Fluid Type

SAE 90 gear oil or SAE 30 engine oil

Spec: API GL-1 or GL-3

Capacity

3.5qt

3.31 L

Drain & Refill

3.5 qt

3.31 L

Change Interval

24,000 mi

38,616 km

Data quality

Calibrated

Platform-calibrated book-style value. Verification program ongoing.

Notes

3-speed or 4-speed manual. Original spec called for straight weight gear oil or engine oil.

Other fluid systems on this vehicle

Rear Differential

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

🔧 Built by master technician 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 1955 GMC Panel 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 GMC Panel — $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 Auto Shop Base — $249/mo, all features included.

Try Auto Shop Base →