Fluid · Rear Differential
Rear Differential
for 1973 Mercury Cougar 351 cu in (5.8L) 2-bbl V8 · RWD
Fluid Type
80W-90 or 90 GL-5
Spec: Ford M2C197-A
Capacity
3.5qt
3.31 L
Drain & Refill
3.5 qt
3.31 L
Change Interval
36,000 mi
57,924 km
Notes
9-inch Ford rear axle typical for 429. Add 4 oz friction modifier if limited-slip equipped.
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.