just want to pass some info

the oil lines on the 4.3 4x4 blazer to the oil filter are crimped bad
they can blow out and drain the oil in a hurry most every
blazer ive seen has a slow drip leak a blazer just came to the shop
blown engine the line poped and before the driver could shut it off
BOOM i suggest replacing the lines
its not hard to do little costly but good maintence

just wnated to pass valueable info

The lines aren't too bad from Rockauto.com. If I remember right, the ones from the rad to the filter were $20 and the ones from the filter to the block were around $30.