Your transom gear is grinding because the oil's foaming under pressure and not doing its job. This Ichiro hydrotreated marine gear oil is API GL-5 rated with high EP additives, blended with anti-foam to keep things quiet where it counts. Handles the pressures your gearbox actually sees out on the water. Four litres for a full gear change. No more whining
| 0 | High EP |
| 1 | Anti-foam |
| brand | Ichiro |
| volume | 4L |
| oil_type | Hydrotreated gear oil |
| viscosity | SAE 90 |
| rating | API GL-5 |
| application | Marine gearbox |