LIQUI MOLY Marine 4T Motor Oil SAE 10W-40 is a fully synthetic, heavy-duty oil for four-stroke marine gasoline engines. A high content of anti-corrosion additives protects components in the marine environment while maintaining proper oil pressure and engine cleanliness; it is catalytic-converter and turbo safe. Sold as a case of four 4-liter jugs.
Specifications
| Product Line | Marine 4T |
| Viscosity (SAE) | 10W-40 |
| Type | Fully synthetic (marine 4-stroke) |
| Use | 4-stroke marine gasoline engines; cat/turbo safe |
| Size | 4L (4 Pack) |
| Part Number | 20508 |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
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