1 The Tri-State Tornado lasted for 3 1/2 hours, starting down at 1:01pm 3 miles NNW of Ellington, MS and dissipating at 4:30pm 3 miles SW of Petersburg, IN. 2  Average forward speed of this tornado was 62 miles-per-hour with a record setting speed of 73 miles-per-hour at one point.
The side effects of a blown head gasket include oil and coolantmixing, poor performance, and smoking.
The Issues. The 6L Powerstroke suffers widely from head gasket failure, also known as blown head gaskets, which can be ultimately attributed to stretching of the cylinder head bolts, resulting in a lack of sufficient clamping force between the cylinder head, gasket, and engine block.