Why should grill bars be pre heated anda brushed with oil?

Answer 1

Oil is used to season the bars. it burns into it. When the grill is hot enough it will give you the browned grill marks on your meat but it will not stick.

If you put them on too soon the meat will stick to the bars making an unsightly product as well as a difficult time cleaning the grill.

Also close your grill when you are done and let everything burn off before attempting to clean it. A wet paper towel on the bars once the coals are out will create steam and make it easy to clean.

Answer 2

Preheating your grill and lightly coating the surface with oil will help prevent your food from sticking to the grill.