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Old 10-27-2017, 09:48 PM   #9
EndlessAzure
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Drives: '14 FR-S [37J] | Daily/Track
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Garage
Quote:
Originally Posted by qqzj View Post
Okay, back from a Subaru dealer now. I called around before I left. The quotes were $26, $31 and $34. I am surprised by this kind of variation. At $26, it is only $10 more than Pentonsin A3. I can live with it.

The reservoir is small. It literally was bone dry. But I only needed about half a quart to fill it to slightly below 'full'. Maybe I can use distilled water like I did last time. But the speed at which the coolant is used is a bit alarming, so I went with the real deal this time. (Last time it was just below 'low'.)

I am pretty sure that it is not just evaporation. All my other cars don't use coolant so fast. I don't think it is easier to evaporate from BRZ than my other cars. (One is close to 20 years old.) So if engine is burning a small amount of actual coolant (instead of just water evaporating from reservoir), replenish with actual coolant makes a lot of sense than water. That is just my 2 cents.

Also the radiator cap needs to be turned about 120 degree, not 1/4 turn. Slightly different from my other cars. All good now. The coolant was totally full in the radiator. I am glad that I took a look today and potentially avoided some big issues. To those who did not check recently, 'Please take a look at your coolant'.
You'll also want to note that coolant level changes with engine temperature.

When the engine has been sitting and is cold, coolant returns to the block (lower reservoir level). When your engine is warmed up, coolant moves into the reservoir, raising the level. Based on the manual, check coolant level during cold and ensure it's within the lines
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