Castrol GTX's 3X-Clean formula is developed to fight the three main causes of engine sludge: heat, contaminants, and short trips. By cleaning away existing sludge and creating a barrier that helps stop deposits from forming, Castrol GTX keeps engines cleaner for longer — 35% cleaner than industry standards.* This means drivers and their vehicles enjoy more years together.
Key Benefits:
Pack size: 4 Litres
Packing Type: Bottle
Condition: New, sealed, genuine Castrol product
*Based on Castrol internal testing versus industry sludge standards.
| Field | Value |
|---|---|
| Brand | Castrol |
| Product Name | GTX |
| Part Number | 521771961 |
| Component Number | 000398 |
| Viscosity | 15W-40 |
| Oil Type | Mineral Oil |
| Capacity | 4 L |
| Number of Items | 1 |
| Manufacturer Part Number | 521771961 |
| Recommended Engine Type | Petrol & Diesel |
| Compatible Vehicle Make | Fiat, Mercedes-Benz, VW |
| Manufacturer Approval | ACEA A3/B4, API SP, Fiat 9.55535-D2, MB 229.1, VW 501 01/505 00 |
| Packing Type | Bottle |
| Item Condition | New |
⚠️ Please check compatibility before purchase — this oil meets a specific set of manufacturer specifications (see above). Confirm this matches your vehicle's exact requirement via your handbook or oil filler cap before buying.
Usage guidance:
Storage & handling: