Looking After the CX

Let’s start with some fantastic news: the engines, transmissions, and hydraulics of the CX are impressively reliable. However, it’s wise to keep an eye on the Diravi steering system, as it can occasionally develop internal or external leaks. Over time, the hydraulic fluid return hoses may dry out and crack. Additionally, the front suspension rods and bushings, along with the rear suspension arm bearings, may require replacement after all these (at least 35) years.

There is a caveat: the superstructure and subframe can be susceptible to rust. Therefore, the first areas to check are the underbody, wings, and boot. The interior trims, plastics, and upholstery—particularly the fabric—might not age as gracefully as one would hope. Electrical issues may also arise as cables and sockets wear out, leading to rusty ground points.

On the bright side, the CX boasts a high survival rate, making it relatively easy to source second-hand spare parts for restoration and maintenance. Many mechanical components are re-fabricated and may even be compatible with other French vehicles from that era.

For additional insights on buying and maintaining a CX, explore clubs and enthusiast websites or join a community. Just a heads-up: some resources may not be available in English. Here is a couple of dedicated sites:

CX Club de France

Generation CX

 

Key Data for Routine Maintenance of Your CX 25 Automatic

  • Fuel tank: 68 litres (petrol).
  • Engine lubricant: 5,45 litres (4,75 litres with the same filter) semi-synthetic or mineral oil 15W40 or 20W50.
  • Transmission lubricant: 6 litres for automatic gearboxes (e.g., Dexron II or TOTAL FLUIDE G3).
  • Hydraulic circuit: 5,3 litres LHM f.
  • Engine coolant: 12,5 litres.
  • Spark plugs: Champion L82YC / EYQUEM 755 SX (gap 0,8-0,9 mm).
  • Battery: 400/65 Ah.
  • Tyres: 195/70 R14 MXV Michelin. Recommended pressure front/rear: 2,4/2,0 psi.
  • Suspension spheres pressure front/rear: 75/40 bars.

Low-Mileage Operating Intervals

  • Yearly (max. 10 000 km): change the oil, lubricate doors, bonnet, and boot lid.
  • Every 2 years: yearly maintenance + change filter (max. 10 000 km), renew water coolant.
  • Every 4 years: 2-year maintenance + replace spark plugs, clean or replace air filter (max. 30 000 km), renew LHM (max. 60 000 km) and clean its filter (max. 30 000 km), renew gearbox oil (max. 50 000 km), replace petrol filter. Check/adjust/replace: all driving belts, 5 hydropneumatic spheres, brake pads, handbrake, clutch, hydraulic hose connections, ground clearance, front suspension, and steering components.
  • Every 10 years: 2-year maintenance + replace the timing chain (max. 80 000 km), check/adjust/replace: brake pads, front suspension rods, and rear arms (for negative camber), all fuel and injection pipes.
  • Every 15 000 km: adjust the valve/tappet clearance.