Coolant cost fast?
 

I just add Subaru super blue coolant 2 weeks ago, and two track days in SoCal, above 100F, and my coolant in white box already blow "low", anybody has this issue?


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Well, I don't have a BRZ, nor do I live in LA, nor do I track my car ....... but my guess is that your car's system just blew out a bit of coolant when it got really hot.

I'd just check the level, when the engine is cold, and add distilled water if necessary.


humfrz

BTW: I have Tomei el header, Motiv HFC front pipe, Megan racing cat back and OFT stage 2 tuning, is that header makes a lot of hot?


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Oh, yes, with all that race car stuff, the engine will perspire even more ..... thus lose water …. :D


humfrz

Thanks a lot !


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Coolant also evaporates. If you look behind the yellow fill cap (towards the front bumper) you can see a small pinhole vent. After driving for a while or hard like on a track you can see condensation near the hole. I had about half an inch evaporate after a track day at 75*F lol, granted turbo.

Normal - happened to my FRS, and now my BRZ. Usually had to top off after hard driving in hot weather.

Yeah I go through a similar thing during the really hot weeks out here


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You should always monitor coolant levels when the engine is cold. Make sure it's at least at the "Low" level and you should be fine, since it will expand when hot.

As for the system itself, if you are truly worried you should bleed every month or two with this.

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-alex