In general, the 2006 Civic's transmission capacity depends on the type installed: the automatic 5‑speed and the manual 5‑speed each require different amounts of fluid. The automatic transmission holds about 9 quarts of ATF in total, while the manual transmission holds roughly 2 quarts. Exact amounts vary with service method (pan drop vs. full flush) and whether a filter is replaced.
Transmissions offered in the 2006 Civic
The 2006 Civic was available with two transmissions, and each has its own fluid capacity. The figures below reflect typical capacities used by technicians and service manuals.
- Automatic transmission (5‑speed): Total capacity ≈ 9.0–9.5 quarts. A pan drain/refill generally replaces about 4–5 quarts; a full system flush can replace around 9 quarts.
- Manual transmission (5‑speed): Total capacity ≈ 2.0–2.3 quarts. A drain/refill usually replaces about 1.5–2.0 quarts; a complete change uses roughly the full 2.0–2.3 quarts.
In practice, the exact amount you replace depends on whether you change the filter, perform a full flush, or simply drain the pan. Always verify the specific capacity for your trim and transmission code using the owner's manual or the Honda service data for your vehicle.
Practical tips for service
Use the correct fluid type for your transmission: Honda automatic transmissions in this era typically require ATF DW-1, while manual transmissions use a GL‑4 75W‑90 gear oil. Do not mix fluids, ensure the vehicle is level during service, and consult the official service data for your exact model to confirm capacities.
Summary
Bottom line: For a 2006 Honda Civic, the automatic transmission holds about 9.0–9.5 quarts of ATF in total capacity, and the manual transmission holds about 2.0–2.3 quarts. If you are performing a pan drain and refill, plan to replace roughly 4–5 quarts for the automatic and about 1.5–2 quarts for the manual. For a full fluid replacement, expect to handle the full stated capacities. Always check the owner’s manual or Honda service data for your exact configuration.