Quote Originally Posted by tonyfoale View Post
There are penetrants more effective than diesel. The question that comes to mind is; why is it stuck? Is it rusted, was it over tightened, did it get a bash. Different approaches for each. How are you applying the opening torque, with the chuck key or stillsons etc. Try more than gentle heat.
history is unknown - there is some rust visible, but not excessive. I have not tried stilsons - so will try that.