My coolant is looking pretty bad so I plan to flush the radiator and use Prestone Super Radiator flush to clean it out. Directions say "For systems larger that 12 quarts use two bottles". So, anyone know if the 98 SS is larger than 12 quarts??

 

from what im seeing online its 11.9 for the manual and 11.8 for the auto

 

thanks! one should work then..

 

ive always just used 1