Just say no to deathcool. I dealt with two 3.8 gm cars in the family and it was nothing but trouble, even with flushes. Plugged up radiator cores like a pack of gummy bears was dropped in the tank. Saw the junk come directly out of one core and it stayed clear for about a winter before it plugged again. I believe the trans failed in one car from it running warm. Despite flushing throughly. Another northstar in the family failed like it was designed to before the plugging got bad enough to leave you cold in January.

No chance I’d run that bs in anything.