Coolant overflowing the overflow container.
SEE PICTURES ON PAGE TWO OF THE THREAD. SEE PICTURES ON PAGE TWO OF THE THREAD. 2016 Toyota Sienna with 15,000 miles. Coolant has appeared on TOP of the overflow tank since the van was new. I...
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It is really pretty simple. The coolant is getting pushed into the tank. The cap on the tank is not supposed to seal. It is vented, so the fit of the cap etc, is not important.
Something is causing the coolant to get pushed into the tank.
The most likely cause is a head gasket.
Something is causing the coolant to get pushed into the tank.
The most likely cause is a head gasket.
