Purpose and Specifications

Castrol Outboard 2T 1L is a premium ashless 2-stroke engine oil certified to NMMA TC-W3 standards, designed specifically for water-cooled outboard motors from brands like Mercury, Yamaha, Suzuki, Johnson, and Evinrude. This high-quality lubricant mixes easily with leaded or unleaded gasoline at ratios up to 100:1 as recommended by your engine maker, working perfectly in both premix and oil injection systems.

It delivers superior engine protection by forming a tough oil film that fights high-speed wear and scuffing, keeping pistons, rings, and bearings safe even under heavy loads. Expect exceptional cleanliness with reduced carbon deposits, minimal spark plug fouling, and no ash buildup to prevent pre-ignition or exhaust blocking. Plus, it offers top-notch rust protection against saltwater corrosion and stays miscible in cold temps down to 0°C for reliable starts.

• Prolongs engine life with anti-wear additives for smooth operation season after season.
• Clean combustion means consistent power and fewer maintenance headaches.
• Storage safe with corrosion inhibitors; shelf life up to 5 years unopened.

When to Use / Replace?

Use Castrol Outboard 2T in all 2-stroke outboards operating in fresh or saltwater, from casual fishing to high-speed racing. Ideal for engines running at temps from -10°C to 120°C. Replace oil mixture after every 50-100 hours of use or every 3-6 months during active season, following your outboard manual—flush injection systems annually to avoid buildup.

Pro Tip: Always premix fresh for storage over winter to protect against corrosion.

FAQ

Q: Can I use this with unleaded fuel?
A: Yes, mixes perfectly with unleaded or leaded gas up to 100:1 ratio per manufacturer specs.

Q: Does it work in autolube systems?
A: Absolutely, compatible with oil injection and premix setups in modern outboards.

Q: How often should I change the oil mix?
A: Every 50-100 hours or 3-6 months; check your engine manual for exact intervals.