How to Refill the Transmission in a BMW 318


1. Drive the BMW 318 for at least 20 minutes. The most accurate measurement of transmission fluid level can be achieved only when the fluid is warm.
2. Park on a level surface.
3. Apply the hand brake (emergency brake).
4. Apply the foot brake and move the gear selector through each gear. The engine should be running for this run through the gears.
5. Check the transmission fluid level on the dipstick located under the hood, near the left fender. First wipe the fluid from the indicator, replace the dipstick then pull it out again to read the level. There are two lines indicating 'low' and 'full' measurements.
6. Add fluid to the transmission via the dipstick opening using a funnel. Apply the fluid slowly with intermittent checks to avoid over-filling.
7. Stop filling the transmission when the indicator shows fluid at or near (but not exceeding) the 'full' line.