2010 Honda Civic Owner's Manual - Page 314

Automatic Transmission Fluid DIPSTICK 5. If the level is below the lower mark, add fluid into the dipstick hole to bring it to the level between the upper and lower marks. UPPER MARK LOWER MARK Pour the fluid slowly and carefully so you do not spill any. Clean up any spill immediately; it could damage components in the engine compartment. Always use Honda Genuine ATF-Z1 (automatic transmission fluid). 6. Insert the dipstick all the way back into the transmission securely as shown in the illustration. Check the fluid level with the engine at normal operating temperature. 1. Park the vehicle on level ground. Start the engine, let it run until the radiator fan comes on, then shut off the engine. For accurate results, wait about 60 seconds (but no longer than 90 seconds) before doing step 2. 2. Remove the dipstick (yellow loop) from the transmission, and wipe it with a clean cloth. 3. Insert the dipstick all the way into the transmission securely as shown in the illustration. 4. Remove the dipstick, and check the fluid level. It should be between the upper and lower marks. 308