Long story short, my daughters 2009 2.5 Altima drive belt broke and caused a lot of damage..broke power steering seal and now it looks like the Crankshaft Seal was damaged as well maybe from overheating..anyway i saw there is specific instructions to use an expensive tool to lock the flywheel plate when removing the Crankshaft to get to the seal.....i have a powerful Impact wrench and compressor (IR gun and 30 gallon compressor)...do i still need to lock the plate even If i use an impact gun? Its an automatic trans. That damn tool is like 200 bucks...not happening. Im a tool guy but hell to the N....O on that little tool. Ill build something if i had too....seems its only needed for the 2009-2010 models (.....of course). But i thought an Impact gun would not require locking the plate?