Coolant cost fast? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

ZHoward · 09-04-2015, 09:46 PM

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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humfrz · 09-04-2015, 09:51 PM

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

ZHoward · 09-04-2015, 10:01 PM

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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humfrz · 09-05-2015, 12:39 AM

Quote:

Originally Posted by ZHoward

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 ….

humfrz

ZHoward · 09-05-2015, 12:39 AM

Quote:

Originally Posted by humfrz

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

humfrz

Thanks a lot !

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zkv476 · 09-07-2015, 03:41 PM

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.

aegisdrgn · 09-07-2015, 04:19 PM

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

86kahl · 09-08-2015, 03:40 PM

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

Sent from my toolbox

mav1178 · 09-08-2015, 03:53 PM

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.

[ame="http://www.amazon.com/Lisle-24680-Spill-Free-Funnel/dp/B00A6AS6LY/"]Amazon.com: Lisle 24680 Spill-Free Funnel: Automotive[/ame]

-alex

09-04-2015, 09:46 PM	#1
ZHoward Senior Member Join Date: Feb 2015 Drives: 2013 brz limited Location: LA 626 area Posts: 266 Thanks: 59 Thanked 33 Times in 24 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	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? Sent from my iPhone using Tapatalk

09-07-2015, 03:41 PM	#6
zkv476 Senior Member Join Date: May 2014 Drives: 2014 SWP BRZ, MT Location: New Jersey Posts: 240 Thanks: 11 Thanked 140 Times in 90 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	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 75F lol, granted turbo. __________________ The answer is racecar. Always.*

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09-04-2015, 09:51 PM	#2
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 30,409 Thanks: 29,793 Thanked 32,811 Times in 16,830 Posts Mentioned: 715 Post(s) Tagged: 2 Thread(s)	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

09-04-2015, 10:01 PM	#3
ZHoward Senior Member Join Date: Feb 2015 Drives: 2013 brz limited Location: LA 626 area Posts: 266 Thanks: 59 Thanked 33 Times in 24 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	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? Sent from my iPhone using Tapatalk

09-07-2015, 04:19 PM	#7
aegisdrgn Senior Member Join Date: Dec 2013 Drives: Scion FR-S 10 Series #2263 Location: Los Angeles Posts: 471 Thanks: 208 Thanked 277 Times in 179 Posts Mentioned: 4 Post(s) Tagged: 2 Thread(s)	Normal - happened to my FRS, and now my BRZ. Usually had to top off after hard driving in hot weather.

09-08-2015, 03:40 PM	#8
86kahl Senior Member Join Date: Aug 2015 Drives: whiteout, dark tint Location: SOCAL Posts: 308 Thanks: 2,453 Thanked 335 Times in 133 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Yeah I go through a similar thing during the really hot weeks out here Sent from my toolbox

09-08-2015, 03:53 PM	#9
mav1178 Senior Member Join Date: Apr 2013 Drives: 2005 Toyota Camry Location: 91745 Posts: 6,562 Thanks: 493 Thanked 6,097 Times in 3,029 Posts Mentioned: 95 Post(s) Tagged: 3 Thread(s)	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. [ame="http://www.amazon.com/Lisle-24680-Spill-Free-Funnel/dp/B00A6AS6LY/"]Amazon.com: Lisle 24680 Spill-Free Funnel: Automotive[/ame] -alex

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