You can ruin your car quietly with other elements like Bleach and wrong fuel in the car gas tank. These activities always help you to destroy a car quietly. Identifying the signs of engine problems early on can prevent further damage and expensive repairs. Some common symptoms of engine problems include: More information https://telegra.ph/Cruising-Smoothly-Cars-Equipped-with-Continuously-Variable-Transmissions-CVTs-05-31 Riding the Brakes Downhill. Park the vehicle on safe and level ground, preferably under the shade. Engage the parking brake and open the hood, ensuring the hood prop is in place. Next, grab a socket set, loosen the battery terminals, and remove the battery from under the hood. Not only will this prevent shorting the electricals, but it frees up space so you clean more efficiently. Family Handyman. What is the best way to destroy a car engine? Most chain auto parts stores and repair shops will accept used motor oil for recycling, and you can probably also take it to your local public works station for proper disposal. It's a good idea to check your oil level each time you fill up your tank with gas, and you should top it off if it is below the "full" mark on the dipstick.