SW20 Cooling System Maintenance
Thanks again to Redtarga for this article -
This article contains information on how to change and bleed the coolant, as well as flushing the system. It is based on information in the service manual, tips gathered from various other sources, as well as experience with my own car, a 1990 model 3SGE NA.
Although the turbo models have more plumbing around the motor, this information should generally apply to them as well.