Y is smoke coming out of my tail pipe but no engine lights on

Smoke coming out of the tailpipe can be an indication of various issues with your car. The absence of engine warning lights doesn't necessarily mean there is no problem, as not all issues trigger the check engine light. Here are a few potential reasons for smoke from the tailpipe: 1. **Condensation**: In some cases, what appears to be smoke might just be water vapor or condensation, which is a normal occurrence, especially in cooler weather conditions. This is usually nothing to worry about. 2. **Burning Oil**: If the smoke is bluish-gray and has a distinct burning smell, it might be an indication of burning oil. This could be caused by a leak in the engine's oil system or an internal engine problem. 3. **Burning Coolant**: If the smoke is white and sweet-smelling, it could be burning coolant, which might indicate a leak in the cooling system. 4. **Burning Transmission Fluid**: If the smoke is a reddish color, it could be burning transmission fluid, which might be due to a transmission issue. 5. **Fuel Mixture Problems**: If the smoke is black, it might indicate an overly rich fuel mixture, which could be caused by a faulty sensor or a problem with the fuel injection system. Given that you mentioned just having an oil change, it's possible that there could be a connection between the smoke and the recent maintenance. Some things you can do: 1. **Check Oil Level**: Make sure the oil level is correct and that no leaks are visible under the car. 2. **Monitor Coolant Level**: Check the coolant level to see if there is a noticeable loss. 3. **Check Transmission Fluid**: Ensure the transmission fluid is at the appropriate level. 4. **Look for Leaks**: Inspect the area around your car's engine and under the car for any signs of fluid leaks. Given that the issue has just started, and if the smoke is not a result of condensation, it's best to have your car inspected by a qualified mechanic as soon as possible. They will be able to diagnose the problem accurately and provide the necessary repairs to avoid any potential damage to your vehicle.