Do you have to drain the coolant fully to fit a thermostat on the 9000 turbo 89'?
S Stewart · Registered Joined Jul 19, 2001 · 1,673 Posts Discussion Starter · #1 · Dec 18, 2001 Only show this user Do you have to drain the coolant fully to fit a thermostat on the 9000 turbo 89'?
D Derek · Registered Joined Jun 28, 2000 · 1,245 Posts #2 · Dec 18, 2001 Only show this user No, but if you don't know when it was last changed it would be a good idea to replace it anyway.