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Old 12-02-2020, 11:37 AM   #21
funked1
 
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Drives: 2019 1SS 1LE
Join Date: Aug 2019
Location: Sacramento, CA
Posts: 174
Quote:
Originally Posted by CRBWS6 View Post
What type of evaporation rate are others seeing from the lower tank?

My upper and lower tank looked exactly like the OP's when I bought the car a few months ago.

I filled the upper tank and brought the bottom tank to fill line per the manual. This was 36 oz total add of 50/50 Dex.

Now, 1000 miles later the level has dropped about 1/2" - 3/4" below the fill line in the lower tank.

How does this compare? It seems like a greater rate of evap than my other vehicles with vented overflows.
I have had to add coolant to the lower tank twice in 15k miles. It went from half full to maybe 1/4 full. I live in a very dry climate, so I am assuming it is just evaporating through the vent.
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