Generac GP6500 oil type and capacity and spark plug
GarageDex's data from Generac's own published specs: the Generac GP6500 takes SAE 30, 10W-30 or synthetic 5W-30 (see ambient temperature chart) oil (1.0 L (1.06 qt)) and a Bosch F7TC or equivalent (Generac part 0J00620106) spark plug gapped 0.028-0.031 in (0.70-0.80 mm). It is rated 6,500 running watts and 8,125 starting watts.
Shop 10W-30 oil The spec in the Generac GP6500 manual
Key takeaways
- Oil capacity: 1.0 L (1.06 qt). Add it in stages and stop at the dipstick's full mark rather than pouring the whole amount at once.
- Spark plug: Bosch F7TC or equivalent (Generac part 0J00620106), gap 0.028-0.031 in (0.70-0.80 mm).
- Every value on this page is quoted from Generac's own manual or spec page, linked beside it.
| Item | Spec | From the manual |
|---|---|---|
| Engine oil | SAE 30, 10W-30 or synthetic 5W-30 (see ambient temperature chart)Manual gives an oil chart by ambient temperature; petroleum oil supplied for break-in | “SAE 30 10W-30 Synthetic 5W-30” source |
| Oil capacity | 1.0 L (1.06 qt) | “Oil Capacity 1.0 L (1.06 qt.)” source |
| Spark plug | Bosch F7TC or equivalent (Generac part 0J00620106) | “Spark Plug Type Bosch F7TC or equivalent” source |
| Spark plug gap | 0.028-0.031 in (0.70-0.80 mm) | “Spark Plug Gap 0.028-0.031 inch or (0.70-0.80 mm)” source |
| Fuel tank | 7.9 gal (29.9 L) | “Gasoline Capacity 29.9 L (7.9 gal)” source |
| First oil change | change oil after first 30 hours | “Change oil after first 30 hours of operation,” source |
Parts for the Generac GP6500
Each Buy button searches Amazon for the exact spec in the manual.
- Engine oil10W-30, 1.0 L (1.06 qt)Buy
- Spark plugBosch F7TC or equivalent (Generac part 0J00620106)Buy
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Other Generac generators
Source: Generac GP Series (GP6500/GP6500E/GP8000E) Owner's Manual (PDF). If your unit's own manual or label differs, follow it.