Checking And Adding Engine Oil - Mercury 350hp Verado Operation And Maintenance Manual

In lieu of the recommended oil, the following may be used (listed in order of
preference):
• Mercury or Quicksilver NMMA™ FC‑W® or NMMA™ FC‑W® catalyst
compatible certified SAE® 25W‑40 Synthetic Blend Marine 4‑Stroke
Engine Oil.
• Mercury or Quicksilver NMMA™ FC‑W® or NMMA™ FC‑W® catalyst
compatible certified SAE® 25W‑40 Mineral Marine 4‑Stroke Engine Oil.
• If the recommended Mercury Racing FC‑W® certified oils are not available,
a major outboard manufacturer's brand of NMMA™ FC‑W® certified
4‑Stroke outboard oil of the same viscosity may be used.
IMPORTANT: Nondetergent oils, multiviscosity oils (other than Mercury or
Quicksilver NMMA™ FC‑W® certified oil or a major brand NMMA™ FC‑W®
certified oil), low quality oils, and oils that contain solid additives are not
recommended.

Checking and Adding Engine Oil

Follow the instructions below to check the engine oil level, and to add engine
oil if required. Refer to Maintenance ‑ Changing Engine Oil and Filter for
additional details.
NOTE: Due to internal condensation, milky
extended idle or low speed operation, especially in cold ambient conditions. Such
milky oil/minor water accumulation is typically eliminated via 10–15 minutes of
high speed or cruise speed operation, prior to overnight or extended shutdown.
Electronic Oil Level Check
The engine oil level may be checked electronically while the engine is idling in
neutral as follows:
1. Confirm the boat is not in shallow water and that there is no risk of
bottoming out the propeller when trimming the engine.
2. Ensure that the joystick and Skyhook are not active, if equipped.
FUEL AND OIL
74817
‑ colored oil may be observed during
28
eng