John Deere Original Equipment Plus-50 II SAE 10W-30 Engine Oil - TY26668

What It Is

This is John Deere’s OEM Plus-50 II SAE 10W-30 engine oil (part TY26668), formulated specifically for air-cooled lawn mower engines and other small engines used in John Deere equipment. It’s designed to reduce engine wear and extend oil change intervals in warmer operating conditions.

Fitment & Compatibility

Before buying, confirm your mower uses an air-cooled gasoline engine requiring SAE 10W-30 oil. This oil is compatible with most John Deere lawn tractors, zero-turn mowers, and walk-behind mowers (e.g., X300, X500, Z500, D100 series, and S100 series). It is not intended for diesel engines or equipment requiring synthetic-blend oils. Check your owner’s manual for the recommended oil viscosity and API service classification—Plus-50 II meets API SJ/SL/CF. If you have a non-John Deere brand engine (e.g., Briggs & Stratton, Kawasaki), verify that 10W-30 is specified, as some require 5W-30 or straight 30W. The bottle is 1 quart (0.95 L); most mowers hold 1.5–2 quarts, so you may need two bottles for an oil change.

Key Things to Know

• Quality & Cost: This is genuine John Deere oil, not a generic blend. The Plus-50 II additive package reduces engine wear and can extend oil change intervals by up to 50 hours in some engines, but always follow your mower’s maintenance schedule.
• Installation Difficulty: Very easy—no special tools required. Drain old oil, replace filter if needed, refill with this oil. Most users can do it in 10–15 minutes.
• Common Gotcha: This is not a full synthetic oil. If your mower calls for synthetic (common in newer commercial models), do not substitute. Also, do not mix with other oil grades or brands.
• Storage: Keep sealed and store in a cool, dry place. Once opened, use within a year.

Should You Buy It

Buy this if you own a John Deere lawn mower that specifies SAE 10W-30 and you want the OEM-recommended oil for maximum engine protection and potentially longer intervals. It’s a premium price for a premium product—ideal for owners who prioritize engine longevity and follow factory maintenance. Avoid if your mower requires a different viscosity or synthetic oil.