Cleaning Coolant overflow bottle

[MKIIINA]

so i was driving my roomies supra and i had noticed that his overflow bottle and the contents of his radiator was the color of mud. yes mud. a coolant flush is definately in order. now the question:

how can he clean the overflow bottle and what is safe to use in there? i used a screwdriver to break most of the heavy grime up when i cleaned my bottle but cant remember what i used to get it as clean as i did... i was thinkin paint thinner might work but what about the sensor? thanks

 

[mazzer]

i usually just run hot water in them. rinse and repeat

 

[Syris]

pressure washer

 

[hot dayam mk3]

hot water and simple green..... get a baby bottle clean brush. and repeat til its bling bling inside.

 

[supra90turbo]

Another vote for Simple Green!

 

[shaeff]

simple green! that's what i use to clean my engine bay, too.

-shaeff

 

[927mgtepat]

I cleaned mine out with hot water and a bottle brush

 

[suprastanger507mgte]

I usually clean with like engine degreaser or parts cleaner and it works well.