Brown Fluid In Reservoir tank

[zerooath]

my car started to act like its going to start overheating and i popped off the radiator cap and this tiny tiny bit of white smoke came out and that was it then i let it cool and started the car again and no white smoke. Is this a bad sign? i just replaced the thermostat a few months ago.

Also i checked the reservoir tank and there is a brownish liquid in there but the coolant i use is greenish....that normal?

thanks for the help

[MURPHY]

check your oil. could just be a rusty radiator inside.

[ManoNegra]

White smoke - most likely coolant dripping from the cap hitting the hot radiator and evaporating. No need for worry imo.
Gunk in reservoir - you must be new to 240s.

[Suk02Si]

There could be rust in the cooling system. That's what happened to my S13 when the previous owner let the stock rad rust out.

[zerooath]

should i just drain the reservoir and add more coolant?

[vw_nissan]

I thought brown coolant in reservoir tank means somewhere is leaking and the coolant get mixed with engine oil....no?

[zerooath]

not sure....doesnt seem like a real big deal.

[jrmiller84]

should i just drain the reservoir and add more coolant?

Don't just drain it, buy a flushing kit. That way you get all of the bad crap out.