Oil and Maintenance Guide for 1985 Evinrude CV4 (2-stroke)
Before You Service the Engine
The 1985 Evinrude CV4 (2-stroke) uses a two-stroke oil application; verify the required product and oil-delivery system before adding lubricant. Confirm the manufacturer-required two-stroke oil specification before choosing from the listed products.
What type of oil does a 1985 Evinrude CV4 (2-stroke) take?
The available oil-product listings include HP Marine Synthetic 2-Stroke Oil, Synthetic 2-Stroke Injector Oil. For a service, choose oil that meets the engine’s actual application requirements, not just a product name.
Why is two-stroke oil different from four-stroke engine oil?
Two-stroke oil is formulated for engines that lubricate internal parts differently from a typical four-stroke engine. The correct oil must suit the two-stroke lubrication system; four-stroke crankcase oil is not an interchangeable substitute.

