95 Mazda Mellenias has heavy blue smoke comming out of the exhaust.The
engine has a
turbo which doesn't seems to circulate what could cause that, and how
do I remedy the problem?

The turbo?s blown -- have you not noticed a drop in performance? The
pressurised oil which should be lubricating the bearings is now
venting through your exhaust, hence blue smoke.

Remedy is quite simple -- keep driving it until it explodes (which
will be soon due to oil loss), then get a new car. Failing that,
change the turbo, but do make sure that the initial failure wasn?t
caused by oil feed problems such as low pressure or sludge.

Best