Decatur is a small city located in northeastern Georgia, just 5 miles northeast of Atlanta. The city was founded in 1823 at the intersection of two Native American trails and named after US naval hero Stephen Decatur.
The main function of a head gasket is to hold engine compression while keeping oil and coolant circulation separate. Undetected blown head gaskets cause coolant and oil mixing, which could lead to severe engine damage, such as engine block cracking.
Essentially, these types may dictate how vulnerable your car is to a blown head gasket condition or will help you select the right type of head gasket material to avoid the condition. This however does not mean that a blown head gasket will be completely avoided but probably minimized.