PRODUCT DETAILS
Mercury 25W40 Synthetic Engine Oil
Suitable for use in high-performance Supercharged Verado engines as recommended by industry experts. Formulated with advanced synthetic technology, this 4L bottle of Mercury 4 stroke Marine Engine Oil SAE 25W40 is part number 92-8M0206956
Quicksilver's all new 4‑Stroke oil technology outperforms automotive oils in marine applications because of its specialized additive package designed for marine engines.
3 things to know:
• For use in all 4‑Stroke Marine Engines ‑ New formula 4‑Stroke oils are engineering approved for all marine 4‑Stroke applications, including: Outboard, MerCruiser, High Performance, Stern Drive/Inboard, and exceeds all Marine industry 4‑Stroke oil requirements including FC‑W and FC‑W Catalyst Compatible.
• Flagship Engine and Corrosion Protection ‑ Industry leading strength and viscosity retention and ultimate corrosion and wear protection
• The most recommended Marine Oil ‑ Over 5 years of engineering and development by the largest marine engine manufacture in the world.
25W40 Synthetic Blend recommended in all Marine Engines (BEST Choice).
4 L (32 oz) plastic bottle
Quicksilver Branded
SHIPPING & DELIVERY
Delivery & Returns Policy
Delivery
Standard Delivery
- £6: Royal Mail Tracked 24 Service
- £3.99: Large Letter - Royal Mail 1st Class Post (Untracked)
We offer free delivery on all orders over £150 (excludes outboard engines).
Orders placed before 1:00 PM (Monday-Friday) are usually dispatched the same working day.
Most parcels are delivered within 24 hours, but please allow extra time for courier delays that may occur outside our control.
For outboard engines, please contact us for a delivery quote.
Important: Please ensure your shipping address is correct before completing checkout. SSI Marine is not responsible for parcels sent to an incorrect address provided by the buyer.
Tracking Your Order
Once your order has been dispatched, you will receive a tracking number via email (after 5 PM on the day of dispatch).
Tracking is available only for parcels sent via Royal Mail Tracked 24.
Large Letter orders are sent via Royal Mail 1st Class Post (untracked).
Returns
We accept returns of unused and undamaged items within 30 days of purchase.
Returned items must be in sellable condition and include the original packaging.
Please do not tape, label, or write directly on the product's original box.
Important: Do not return items in their original product boxes only, they must be placed inside a protective outer box or bag. Parcels returned like the example below will be subject to a 20% restocking fee.
Return shipping costs are the customer's responsibility.
Please include your order details and reason for return inside the parcel.
Refunds
Refunds are issued for the item purchase price only (shipping costs are non-refundable).
All refunds will be made using the same payment method as your original order.
Items returned in poor condition or without proper packaging may incur a 20% restocking fee.









