I have a 2005 Cobalt SS Supercharged that has peanut butter colored foam that is oily in the reservoir it does not overheat nor has it ever nobody that I know knows what is broke and how to fix it if anyone knows or has any questions I will be glad to answer I need help desperately

 

Im going to asume you are talking about engine coolant if not f me

Usually when someone has something oily in their coolant it's engine oil and thats no bueno.
First see what your oil looks like and check the level. If nothing is weird there change coolant and oil drive it for awhile and check both again.

 

the engine oil is fine have checked hot and cold right after driving and sitting after a day oil is at the same level I just changed it two weeks ago

 

Like electrolysis? Caramel milk kinda lookin?

 

a light brown color looks exactly like peanut butter

 

More than likely a bad oil cooler based on what you described. Oil pressure is higher than coolant system pressure and can force it's way in.