You can use this device with standard e-liquid but it is not optimized for that. The device has two coils you can use, a 1.4ohm and a 0.8ohm. If you wanted to use this device with standard e-liquid you would want to use the 0.8ohm because it has a lower resistance so it will heat up more to vaporize the liquid.

Can you use this with regular e-liquid?

Does the Starss Bravo need the coil to be replaced on occasion?

The coil will need to be replaced but how often is determined by your vaping habbits. The coils are pre installed into the refillable pods and are not purchased seperatly.