* Bluetooth radiation is electromagnetic radiation. It's a type of radio wave, similar to the waves used for Wi-Fi or cell phone communication. These waves carry very low energy levels.
* Petrol ignition requires heat. Petrol ignites when it reaches its autoignition temperature, which is around 246°C (475°F). This requires a significant amount of energy, much more than what Bluetooth waves can provide.
* Bluetooth waves are non-ionizing. This means they don't have enough energy to break chemical bonds in molecules, which is what's needed to start a fire.
In short, Bluetooth waves are harmless to petrol. They won't cause it to ignite.
It's important to remember: Petrol is highly flammable. Store it properly in a well-ventilated area away from heat sources and ignition sources.