I have just noticed fluid on my driveway from a slow leak. It appears to
be coming from around the harmonic balancer. It is wabbling when it turns
(as if it were loose where it goes into the motor). A friend recommended
loosening the bolts and (knowing exact torque required) retightening them
to see if it was somehow loose. Is this possible? Would this be an
expensive repair if I were to take it to a shop?