Flush Radiator

On Sat, 12 Nov 2005 23:40:52 GMT, "Brian"
> wrote:

>I have a 1996 Miata 1.8 L. I have never flushed and refilled coolant
>(myself), so i'm looking for some guidance. I have Haynes manual for my
>Miata.
>Instructions a
>1. drain coolant thru radiator drain
>2. loosen engine block drain plug and drain coolant thru there
>3. flush system
>4. drain overflow reservoir
>5. close rad. drain and engine block drain
>6. Place heater temp control in max heat position
>7. slowly add coolant till radiator is full
>8. run car with radiator cap off until thermostat opens
>9. turn car off and let cool
>10. add more coolant to radiator to fill to top
>11. replace radiator cap and start engine
>12. allow to reach operating temp & check system
>
>My questions:
>1. in step 3 do you flush thru radiator drain or engine block drain, or
>both?
>2. in step 6 what is the heater temp control? How do I place it in max heat
>position?
>3. what do they mean by step 8 - run until thermostat opens?
>4. are there any other important steps I am missing?
>
>thanks for any help
>Brian White
>
I have a question about step #2. Where is the "engine drain plug"?

I can't find any mention of it in the factory manual for my '99.