Generac - Scheduled Maintenance KIT 760/990 EXT 5W30 Synthetic Oil - 0J57670SSM

What It Is

This is a scheduled maintenance kit from Generac designed for their 760cc and 990cc commercial-grade engines. It includes a pre-measured amount of 5W-30 synthetic oil and the necessary filters/gaskets for a single oil change and filter replacement.

Fitment & Compatibility

• Check your engine model: This kit is specifically for Generac engines with 760cc or 990cc displacement. Look for the engine model number stamped on the valve cover or near the oil fill cap.
• Not universal: It will not fit residential push mowers or small engines under 700cc. It is intended for Generac zero-turn mowers, stand-on mowers, and larger commercial walk-behinds.
• OEM vs aftermarket: This is a Generac OEM kit (part number 0J57670SSM). Aftermarket alternatives exist but may not include the correct filter thread or gasket dimensions.
• Measurements: The oil quantity is pre-measured for the specific engine sump capacity (typically 1.5–2 quarts for 760cc, 2–2.5 quarts for 990cc). Do not add extra oil unless the engine manual specifies a different capacity.

Key Things to Know

• Quality: Synthetic 5W-30 provides better cold-start protection and high-temperature stability than conventional oil, ideal for commercial use.
• Installation difficulty: Easy – drain old oil, replace filter, refill. Requires basic tools (wrench, oil pan, funnel). No special skills needed.
• Common gotcha: The kit may come with a drain plug gasket – replace it to prevent leaks. Also, double-check that the filter is the correct thread pitch (some Generac filters are metric vs. standard).
• Frequency: Use this kit every 100 hours or annually, whichever comes first. Not for break-in oil changes.

Should You Buy It

If you own a Generac 760cc or 990cc commercial mower and want a guaranteed fit, pre-measured oil, and OEM filter quality, this kit saves the hassle of buying separate components. It’s a good choice for fleet owners or anyone who values convenience and reliability over saving a few dollars on aftermarket parts.