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Autopapyrus · Lada Iskra (Gen 1)
https://autopapyrus.com/guides/lada/iskra/changing-the-manual-transmission-oil-in-the-6-speed-gearbox/
Compiled automatically from service literature and owner experience. Specs are for the typical configuration — check them against your exact car before you start.

Lada Iskra (Gen 1): Changing the Manual Transmission Oil in the 6-Speed Gearbox

The Chinese-built 6-speed manual transmission (WLY series) used in the Iskra is not "lifetime fill." The schedule calls for the first oil change at about 4,500-5,500 km, then every 45,000 km or every 3 years. You can do the job yourself if you have a pit or a lift. The key is to fill the oil up to the edge of the fill hole with the car on level ground.

Difficulty: Medium Time: 40-60 minutes Steps: 11 Tools: Inspection pit, ramp, or lift; wrench or hex key for the drain and fill plugs (check the size against the plug itself); drain pan of at least 3 L (3.2 qt); syringe or fluid pump with a flexible hose; torque wrench; shop rags; new plug sealing washers if needed

Part

  • 🔩 Manual transmission gear oil per the manufacturer's specification, viscosity grade 75W-80 or similar (check the service book for the exact specification). The exact fill capacity for this gearbox is not confirmed in publicly available sources, so rely on the level at the bottom edge of the fill hole. Plug gaskets or washers

Step by step

11 steps
  1. Warm up the gearbox with a short 5-10 minute drive so the oil thins out and drains completely. Do not work on a scorching hot gearbox, to avoid burns.
  2. Park the car on a level, horizontal surface, over a pit, or on a lift. Set the parking brake and place wheel chocks. If you raise the car with a jack, always back it up with jack stands.
  3. If necessary, remove the engine undercover (skid plate). Locate the fill plug on the gearbox housing (on the side wall) and the drain plug (at the bottom of the case). Wipe the area around the plugs clean.
  4. Loosen the fill plug first. This way you confirm that you can open it, and you won't end up with the oil already drained and no way to refill.
  5. Position the drain pan and remove the drain plug. Let the oil drain for 10-15 minutes. Inspect the plug: a light coating of fine gray dust on the magnetic part is acceptable, but metal shavings or larger particles indicate gearbox wear.
  6. Clean the plug and replace the sealing washer or ring if it is deformed. Install the drain plug and tighten it with a torque wrench. The torque for this gearbox is not confirmed in publicly available sources; for plugs like this it is typically in the range of 20-35 N·m (15-26 lb-ft). Do not overtighten, to avoid stripping the threads in the aluminum case.
  7. Pump oil in through the fill hole with a syringe or fluid pump. Keep filling until oil begins to seep slightly out of the hole at its lower edge.
  8. Wait 2-3 minutes for the level to settle and top up if needed. Then install the fill plug with a new washer and tighten it to the same torque as the drain plug.
  9. Wipe the gearbox and plugs with a rag. Take a 5-10 minute drive, shifting through all gears, including reverse.
  10. Stop on level ground and check the plugs for leaks. If needed, check the level once more with the gearbox cooled down and top up to the edge of the hole.
  11. Reinstall the engine undercover. Dispose of the used oil at a designated collection point.

Common mistakes and warnings

  • Do not overfill the oil above the edge of the fill hole: the excess escapes through the breather and causes seal leaks. Use only oil that meets the manufacturer's specification for this particular gearbox. If you experience hard shifting, noise, or vibration in the gears after the change, take the car to a repair shop. If you have no experience working under a car, do not work on a jack without safety stands. Leave the job to a mechanic.
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