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Old 06-25-2022, 03:40 PM   #14
RZNT4R
Professional Mechanic
 
Join Date: Apr 2010
Drives: 2017 86 6MT Oceanic
Location: Quebec, Canada
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Oh and since we're going on about that...

Even if the rad cap is installed, it means nothing if it's defective. A bad rad cap is a common issue that shows up as low coolant/no leaks. In my youngers days as a mechanic I had an experienced coworker who was adamant that my old and busted high KM 4Runner had a bad head gasket. It held pressure, had no leaks but was losing coolant long-term. I decided to test the rad cap, it failed, was replaced and the issue was resolved.
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