Looking After the GSA
The GSA is a remarkably dependable and easily serviceable hypcar, but there’s a twist when it comes to sourcing body and interior parts. With not that many GS/GSA models still on the road, finding even second-hand or refurbished components can be quite an adventure. On top of this challenge, the interior trim, which covers the pillars and roof frame, is particularly fragile and not made from a stellar quality plastic. Over the years, this material tends to harden and crack, making replacements even more vital. While some used body and interior components are still floating around online, if you ever stumble upon parts in decent condition, be sure to acquire them for backup—trust us, we’re speaking from experience!
Corrosion is also a notable concern for the GS/GSA, affecting various body components such as the floors, boot, wings, sills, and doors. Some savvy early owners preventatively applied anti-rust products to their vehicles—like the GSA X3 featured here—but we still found ourselves dealing with blistering and chipping in areas near the rear doors and C-pillars.
On the bright side, GS engines and their mechanical components are typically quite durable, especially when regularly maintained. The smart air-cooling design enhances engine reliability, but there are a couple of things to keep in mind. It’s not unusual for these engines to develop oil leaks or burn oil, particularly around the oil drain plug seals. And if you’re dealing with the smaller 1,015cc engine from the first generation, it has a reputation for fragile camshafts. But don’t fret—any such issues can be resolved with an engine overhaul, even if that’s often easier said than done!
The GSA’s hydraulic system is refreshingly straightforward, requiring no hydraulic servicing for the purely mechanical steering and gearbox. However, the hydropneumatic spheres, which serve the suspension and brake accumulator, should not be overlooked. These components require checking every four years and potential replacement, along with a refresh of the LHM fluid and a filter clean. Keep an eye on the main hydraulic hoses, particularly the robust pipe connecting the accumulator to the LHM tank. A negative camber angle in the rear wheels is a tell-tale sign of failing rear arm bearings. Lastly, as with any classic car, remain vigilant about the fuel hoses. A practical tip: when refueling, avoid hooking or snagging the fuel nozzle, as the delicate filler neck in the boot is prone to cracking.
For more tips on buying and maintaining a GS/GSA, check out club and enthusiast websites, or consider joining a club. Just a heads-up: not all resources may be available in English. Here are a few examples:
Mattijs Kemmink GS and GSA website
A true guru in GS/GSA restoration whom we highly recommend is Markus La Tendress at RetroGarage in Aachen, Germany!
Key Data for Routine Maintenance of Your GSA X3
- Fuel tank: 43 litres petrol.
- Engine lubricant: 4 litres 15W40 or 20W50 mineral oil (3.5 litres if the filter is not replaced).
- Transmission lubricant: 1.6 litres SAE90 or 80W90 gearbox oil.
- Hydraulic circuit: 2.9 litres LHM fluid.
- Engine coolant: 0 litres (yes, really! 😂).
- Spark plugs: MARCHAL 34.2 H / BOSCH W200 T30 or W6D / AC 41.4 XLS / CHAMPION N7Y / EYQUEM 800LS / MARELLI CW78LP (gap: 0.65-0.75 mm).
- Battery: 225/45 Ah.
- Tyres: Michelin 145 SR 15 XZX. Recommended pressure (front/rear): 26/28 psi.
- Suspension sphere pressure (front/rear): 55/35 bars (welded spheres).
Low-Mileage Operating Intervals
- Yearly (max. 7,500 km): change the oil, lubricate doors, bonnet, boot lid, handbrake.
- Every 2 years (max. 15,000 km): yearly maintenance + change oil filter. Check, adjust, or replace: spark plugs, alternator drive belt.
- Every 4 years: 2-year maintenance + renew gearbox oil (max. 22,000 km), replace air filter (max. 30,000 km), replace LHM and clean its filter (max. 45,000 km), replace fuel filter (max. 30,000 km), grease clutch mechanism, blow-clean oil cooler. Check, adjust, or replace: 5 hydropneumatic spheres, parking brake, brake pads, hydraulic hose connections, ground clearance, front wheel alignment, tyre balancing.
- Every 10 years (or when reaching the specified km): 2-year maintenance + replace the 2 timing chains and tensioners (max. 60,000 km), check valve/tappet clearance (max. 20,000 km), lubricate height correctors, check front suspension, steering components, and rear arms.