Answer
Sep 04, 2024 - 01:16 PM
The recommended oil type for the 4.3L MerCruiser engine is 25W-40 marine-grade oil. This oil is designed to handle the unique demands of marine environments, such as exposure to saltwater and high temperatures.
Alternatively, you can use Mercury MerCruiser High-Performance Synthetic Blend engine oil 10W-30, which meets NMMA FCW Catalyst Compatible certification specifications and is also suitable for marine engines.
