Sierra 10W-30 4-Stroke Conventional Catalyst Marine Oil

Sierra 10W-30 4-Stroke Conventional Catalyst Marine Oil

Sierra 10W-30 4 Stroke Catalyst Engine oil is designed for modern 4-stroke recreational engines with or without emission catalyst systems. Approved for all 4 stroke applications including outboard, inboard, and sterndrive. Exceeds all requirements including FC-W and FC-W Cat compatible. The premium blend provides superior protection against corrosion in harsh marine environments. Anti-wear technology  prevents phosphorus depletion to extend the mission catyalyst life while still providing outstanding protection.

Features:

ZDDP Anti-wear additive

Deposit control

Exceeds 4 Stroke FC-W and FC-W Cat compatible requirements

Approved for 4 Stroke outboard, inboard, and sterndrive applications

Replaces: Mercury. Johnson/Evinrude, Nissan/Tohatsu, Suzuki, Yamaha, & Honda

• How much oil does my engine need? It varies model to model, check out our Engine Oil Capacity Guide for more information and capacity charts! Sizing:

Quart 18-9420CAT-1

Gallon 18-9420CAT-3

Interchange

Mercury Marine

92-8M0078625

92-8M0078626

Frequently Asked Questions

• What is Sierra 10W-30 4-Stroke Conventional Catalyst Marine Oil used for? Sierra 10W-30 4-Stroke Conventional Catalyst Marine Oil is designed for modern 4-stroke recreational engines with or without emission catalyst systems. It is approved for 4-stroke outboard, inboard, and sterndrive applications and provides corrosion protection in harsh marine environments.
• Is Sierra 10W-30 4-Stroke Conventional Catalyst Marine Oil compatible with catalyst systems? Yes. This oil is designed for engines with or without emission catalyst systems and is FC-W Cat compatible. Its anti-wear technology helps prevent phosphorus depletion while providing protection for the engine and emission catalyst system.
• Which 4-stroke marine applications can use Sierra 10W-30 Catalyst Marine Oil? Sierra 10W-30 4-Stroke Conventional Catalyst Marine Oil is approved for 4-stroke outboard, inboard, and sterndrive applications. The product description also states that it replaces specified oils from Mercury, Johnson/Evinrude, Nissan/Tohatsu, Suzuki, Yamaha, and Honda.
• What features does Sierra 10W-30 4-Stroke Conventional Catalyst Marine Oil provide? This marine oil contains a ZDDP anti-wear additive and provides deposit control. It exceeds 4-stroke FC-W requirements and is FC-W Cat compatible, while its premium blend provides corrosion protection in harsh marine environments.
• What sizes and part numbers are available for Sierra 10W-30 Catalyst Marine Oil? Sierra 10W-30 4-Stroke Conventional Catalyst Marine Oil is available in a quart size, part number 18-9420CAT-1, and a gallon size, part number 18-9420CAT-3.
• What Mercury Marine part numbers does Sierra 10W-30 Catalyst Marine Oil replace? The product description lists Mercury Marine part numbers 92-8M0078625 and 92-8M0078626 as interchangeable part numbers for Sierra 10W-30 4-Stroke Conventional Catalyst Marine Oil.