Generac QT 6.8L 70kW — Changing Engine Oil
Maintenance · Engine crankcase / oil filter
For the Generac QT 6.8L 70kW, from the Generac owner's manual.
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Before you start
- After refilling the crankcase with oil, always check oil level on dipstick. NEVER OPERATE ENGINE WITH OIL BELOW THE DIPSTICK "ADD" MARK.
Procedure
- Drain the oil while the engine is still warm from running.
- Remove OIL DRAIN HOSE from its retaining clip.
- Loosen and remove OIL DRAIN HOSE CAP. Drain oil completely into suitable container.
- Install and tighten OIL DRAIN HOSE CAP, and re-install into its retaining clip.
- Turn OIL FILTER counterclockwise and remove. Dispose of old filter.
- Apply light coating of new engine oil to seal of new oil filter. Install FILTER and tighten by hand only. DO NOT OVERTIGHTEN.
- Remove OIL FILL CAP. Add recommended oil. DO NOT FILL ABOVE THE DIPSTICK "FULL" MARK.
- Start engine and check for oil leaks.
Specs & values
- Crankcase oil capacity is 4.0 U.S. quarts (3.8 liters)
Source: Generac owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.