* Transmission fluid: Automatic transmission fluid is often red, though the shade can vary. A transmission leak would usually be accompanied by slipping or difficulty shifting gears.
* Power steering fluid: This is also frequently red. A leak would likely result in difficult steering, especially at low speeds.
* Coolant (rare, but possible): While typically green or blue, some coolants are red. A coolant leak would be accompanied by overheating issues.
To determine the source, you'll need to locate the leak and inspect the fluid's properties (smell, consistency). A mechanic can easily identify the fluid and diagnose the problem. Do not attempt to diagnose further without appropriate safety measures and knowledge, as some fluids are hazardous.
