Gearbox oil Mercedes C-Class W205 6G-Tronic — viscosity and OEM spec
Gearbox oil for Mercedes C-Class W205 6G-Tronic (2014–2021) — correct viscosity, OEM specification, fill volume and change interval.
Gearbox Specifications
| Parameter | Value |
|---|---|
| Make / Model | Mercedes C-Class W205 |
| Gearbox type | manual |
| Gearbox code | 6G-Tronic |
| Production Years | 2014–2021 |
| Oil viscosity | 75W-85 |
| OEM specification | MB 235.7 |
| Fill volume | 1.5 L |
| Change interval | 100000 |
“Lifetime” fill in DSG and CVT gearboxes does not mean never change the oil — manufacturers recommend changing every 60,000 km to preserve gearbox life.
Approved Oils for 6G-Tronic
Mercedes-Benz MTF / Castrol Syntrax Ultra / Liqui Moly 75W-85
Manual Gearbox — Key Points
Manual gearbox: Drain on a warm gearbox for best flow. Fill to the level plug hole and refit immediately.
FAQ
What oil goes in Mercedes C-Class W205 6G-Tronic?
Viscosity 75W-85, specification MB 235.7, volume 1.5 L. Suitable brands: Mercedes-Benz MTF / Castrol Syntrax Ultra / Liqui Moly 75W-85.
When should the gearbox oil be changed on Mercedes C-Class W205?
Every 100000 km.
Can I use a universal ATF instead of MB 235.7?
No. The 6G-Tronic requires strict compliance with MB 235.7. A universal ATF lacks the correct friction characteristics and will cause premature wear.
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