John Deere Original Equipment Plus-50 II SAE 15W-40 Oil - TY26673 (Qty of 4)

What It Is

This is a pack of four 1-quart bottles of John Deere Plus-50 II SAE 15W-40 engine oil (part TY26673). It’s a semi-synthetic oil formulated for heavy-duty, high-temperature use in John Deere lawn and garden tractors, zero-turn mowers, compact utility tractors, and commercial mowers.

Fitment & Compatibility

• Check your engine type: This oil is designed for diesel engines and high-performance gasoline engines. Not suitable for small push-mower engines (e.g., 140cc or 190cc) that typically require SAE 30 or 10W-30.
• Model compatibility: Fits most John Deere X300, X500, X700 series, and Z900 zero-turn mowers with Yanmar, Kawasaki, or Briggs & Stratton engines. Also fits 1, 2, and 3 Series compact tractors. Always verify your owner’s manual recommends 15W-40.
• OEM vs aftermarket: This is genuine John Deere oil. Aftermarket equivalents (e.g., Shell Rotella T4 15W-40) work but may lack the proprietary Plus-50 additive package that extends oil change intervals in compatible engines.
• Quantity: The four-bottle pack is enough for most mower oil changes (typically 1.5–2 quarts). You’ll have leftover for topping off or your next change.

Key Things to Know

• Quality: Plus-50 II meets API CJ-4, CI-4, and CH-4 standards, offering excellent wear protection and soot control. It’s a heavy-duty oil, not a basic lawn mower oil.
• Installation difficulty: Easy. Locate drain plug, drain old oil, replace filter (if needed), and refill. No special tools required.
• Gotcha: Do not use this oil in engines that specify SAE 30 or 10W-30. It’s too thick for cold starts and can cause hard starting or reduced flow in small engines.
• Gotcha: The “Plus-50” label means it can extend oil change intervals by up to 50 hours only if your engine is specifically designed for it (check your manual). For standard engines, stick to the regular interval.

Should You Buy It

Buy this if you own a mid-to-large John Deere mower or compact tractor that requires 15W-40 and you want OEM-grade protection and extended drain capability. Skip it if you have a small push mower or a gas engine that calls for a lighter weight oil.