Regular oil changes are essential for a transfer case to run smoothly: worn or contaminated oil leads to increased wear, louder operation, and can eventually cause serious failure, especially in off-road or heavy-duty use. In the table below we’ve compiled the exact oil specification, fill quantity, and factory-recommended service interval for the most popular BMW, Land Rover, Mercedes-Benz, and Porsche transfer cases, so you always use the right oil and amount during maintenance.
| Transfer case type | Oil specification | Fill quantity | Service interval |
|---|---|---|---|
| BMW ATC300 | RAVENOL DTF-1, BMW DTF-1 | 620 ml | 50,000 km |
| BMW ATC400 | RAVENOL DTF-1, BMW DTF-1 | 800 ml | 50,000 km |
| BMW ATC500 | RAVENOL DTF-1, BMW DTF-1 | 900 ml | 50,000 km |
| BMW ATC700 | RAVENOL DTF-1, BMW DTF-1 | 900 ml | 50,000 km |
| BMW ATC35L | RAVENOL DTF-1, BMW DTF-1 | 620 ml | 50,000 km |
| BMW ATC350 | RAVENOL DTF-1, BMW DTF-1 | 620 ml | 50,000 km |
| BMW ATC45L | RAVENOL DTF-1, BMW DTF-1 | 700 ml | 50,000 km |
| BMW ATC450 | RAVENOL DTF-1, BMW DTF-1 | 700 ml | 50,000 km |
| BMW ATC13-1 | RAVENOL DTF-1, BMW DTF-1 | 700 ml | 50,000 km |
| LAND ROVER ITC PLA | RAVENOL DTF-1 | 1,500 ml | 50,000 km |
| LAND ROVER ITC DD295 | RAVENOL DTF-1 | 1,500 ml | 50,000 km |
| MERCEDES-BENZ DCS | DEXRON 6 | 700 ml | 50,000 km |
| MERCEDES-BENZ DCD OFFROAD | DEXRON 6 | 1,500 ml | 50,000 km |
| PORSCHE CAYENNE PL72T | CASTROL 75W | 750 ml | 50,000 km |
| PORSCHE CAYENNE PL72ATC | RAVENOL DTF-1 | 1,000 ml | 50,000 km |
| PORSCHE MACAN 95B | RAVENOL DTF-1 | 600 ml | 50,000 km |
If the oil looks noticeably dark, contains metal shavings, or you notice unusual noise while shifting, don’t wait for the mileage mark — have it changed right away.