Gearbox oil Alfa Romeo Giulietta C635 — viscosity and OEM spec
Gearbox oil for Alfa Romeo Giulietta C635 (2010–2020) — correct viscosity, OEM specification, fill volume and change interval.
Gearbox Specifications
| Parameter | Value |
|---|---|
| Make / Model | Alfa Romeo Giulietta |
| Gearbox type | manual |
| Gearbox code | C635 |
| Production Years | 2010–2020 |
| Oil viscosity | 75W-85 |
| OEM specification | API GL-4+ |
| Fill volume | 2.2 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 C635
Selenia WR Gear / Castrol Syntrax 75W-85 / Motul Gear 300 75W-90
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 Alfa Romeo Giulietta C635?
Viscosity 75W-85, specification API GL-4+, volume 2.2 L. Suitable brands: Selenia WR Gear / Castrol Syntrax 75W-85 / Motul Gear 300 75W-90.
When should the gearbox oil be changed on Alfa Romeo Giulietta?
Every 100000 km.
Can I use a universal ATF instead of API GL-4+?
No. The C635 requires strict compliance with API GL-4+. A universal ATF lacks the correct friction characteristics and will cause premature wear.
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