MTD Genuine Parts MTD 737-04318 HD SAE 30 4-Cycle Trimmer Engine Oil 3.04oz - Replaces Craftsman and Others

What It Is

This is a pre-measured 3.04 oz bottle of MTD Genuine Parts HD SAE 30 4-cycle engine oil, designed specifically for small engines in trimmers, edgers, and other handheld outdoor power equipment. It’s a direct replacement for Craftsman and other brands using the same spec.

Fitment & Compatibility

Check your owner’s manual or the engine label for “SAE 30” or “HD SAE 30” oil requirement. This oil is for 4-cycle engines only—do not use in 2-cycle mix. It replaces OEM part numbers like MTD 737-04318 and fits most Craftsman, MTD, Troy-Bilt, and Cub Cadet trimmers/edgers with 4-cycle engines (common on models with 25cc–31cc engines). Measure the fill capacity: the 3.04 oz bottle is a single-use dose for most handheld 4-cycle trimmers (typical capacity 2.5–3.5 oz). If your engine takes more, you’ll need two bottles. Verify your engine’s oil fill plug location and dipstick type—some require a specific funnel.

Key Things to Know

• Quality: This is MTD Genuine Parts oil, not generic. It meets API service classification for small 4-cycle engines and includes anti-wear additives for high-RPM trimmer use.
• Installation difficulty: Very easy—just unscrew the oil fill cap, pour in the entire bottle, and check dipstick. No measuring or mixing needed.
• Common gotcha: The bottle is small and easy to misplace. Also, some engines require the unit to be level when checking oil—tilting can give a false reading.
• Storage: Keep the bottle in a cool, dry place. The oil has a long shelf life but avoid freezing.

Should You Buy It

Buy this if you have a 4-cycle trimmer or edger (Craftsman or compatible) and want a no-measure, one-shot oil change that’s OEM-spec and highly rated. It’s ideal for quick maintenance without buying a quart you’ll waste. Skip it if your engine needs a different viscosity (e.g., 10W-30) or if you prefer bulk oil for multiple changes.