Hey this 97 se has brown gunk on sides of resivoir, I don't see anything floating around, Do I just need to flush it? is that normal to have sticky brown sh#t there, is it from dex coolant? I popped off radiator cap and see some sh#t floating around,and underside of radiator cap has brown gunk on it also. Is that bad or normal?
Thanks
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1997 grand prix se 3800 series 2.
First Grand Prix looks good drives great.