Fluid · Rear Differential
Rear Differential
for 2026 Cadillac CT5 2.0L Turbo I4 · AWD
Fluid Type
75W-90 synthetic gear oil
Spec: GM Part No. 12378261
Capacity
1.9qt
1.8 L
Drain & Refill
1.9 qt
1.8 L
Data quality
Calibrated
Platform-calibrated book-style value. Verification program ongoing.
Notes
AWD model with active rear differential. Lifetime fill per GM
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