When you're going downhill, your car's engine can actually help you slow down by providing engine braking. This is when the engine works against the wheels to create resistance and slow the car down. However, if you're in a high gear, the engine won't be able to provide as much engine braking and you'll have to rely more on your brakes. This can cause your brakes to overheat and fade, which can be dangerous.
By downshifting to a lower gear, you'll increase the engine braking and reduce the amount of work your brakes have to do. This will help to keep your brakes cool and prevent them from fading.
It's also important to keep in mind that you shouldn't downshift too quickly. If you do, it can cause your car to jerk and stall. Instead, downshift gradually as you're going downhill.
Here are some tips for downshifting with an automatic transmission while going downhill:
1. Start by downshifting to the lowest gear that's still safe for your car's speed.
2. Downshift gradually as you're going downhill.
3. Don't downshift too quickly, as it can cause your car to jerk and stall.
4. Use engine braking to help you slow down and keep your brakes cool.
5. If you're not comfortable downshifting, you can leave your car in drive and use the brakes to slow down.
