Manufacturer-documented fuel consumption for 14 600–605 kW Diesel generator sets — median 37.60 gal/h at full load, 18.28 gal/h at half load.
Compare 600–605 kW Diesel generator specs side-by-side →
| Model | kW | gal/h @ 50% | gal/h @ 100% | Tank (L) | Runtime @ 50% (h) |
|---|---|---|---|---|---|
| Caterpillar C18DE4K | 600 | 21.42 | 43.06 | — | — |
| Caterpillar D600 GC | 600 | 24.22 | 42.56 | 4292 | 46.8 |
| Cummins/Onan 600 DFX-4R | 600 | — | 10.57 | — | — |
| Cummins/Onan 600 DFX-4XR | 600 | — | 10.57 | — | — |
| Cummins/Onan DFGB | 600 | 22.72 | 40.42 | — | — |
| Cummins/Onan DQCA | 600 | 3.17 | 38.49 | 120 | 10.0 |
| Cummins/Onan DQPAA | 600 | 21.21 | 41.00 | — | — |
| Generac MB600 - GEM | 600 | 4.07 | 10.60 | — | — |
| Generac MD600 | 600 | 5.57 | 11.12 | — | — |
| Generac SD600 | 600 | 23.43 | 41.40 | 1001 | 11.3 |
| Kohler 600REOZV | 600 | 18.28 | 36.72 | — | — |
| Kohler 600ROZD | 600 | 10.17 | 19.79 | — | — |
| MTU 12V1600 DS600 | 600 | 1.37 | 2.62 | — | — |
| Cummins/Onan VTA28G5 | 603 | — | 40.68 | 1325 | — |
Figures from each model’s own manufacturer documentation (spec sheets and manuals); runtime = documented tank capacity ÷ consumption at 50% load. Verify against the datasheet for your exact configuration.
Across 14 models with manufacturer data, full-load consumption runs 2.62–43.06 gal/h (median 37.60); at 50% load the median is 18.28 gal/h.
At 50% load, documented tank sizes give 10.0–46.8 hours (median 11.3 h) across 3 models.