Q: There is a grungy coating on the inside of my oven door — brown, streaky, raised lines on the glass facing the oven. It's a glass-top Whirlpool range (model WFE710H0AS) installed in 2013.

Whirlpool said tempered glass is the best material for ovens. Manufacturers say it's up to you to be careful. So here's how to protect your family. Don't use the door to push the oven rack back ...

Q: There is a grungy coating on the inside of my oven door – brown, streaky, raised lines on the glass facing the oven. It’s a glass-top Whirlpool range (model WFE710H0AS) installed in 2013.