Cause of Crankshaft failure
I believe I posted something on this when it occurred but a few years ago my crank snapped behind where the pulley attaches to it. When this occurred a few weeks earlier I used that Valvoline MaxLife when I changed the oil. After that happened and I put my "new" motor in i vowed never to use it again.
Now my last oil change I recanted and put the stuff in, normally I use DuraBlend, since my motor is getting old and I use it in my wifes car. Now I'm concerned that the crank is going to snap again. I know it was just a coincidence but if it would happen again i would snap. Now I need some honest opinions. Could the oil have caused the crank to fail the first time?
1997 Ranger XLT 4x4 4.0 Auto
What the Deuce!