Since Carmax is paying, I’d be surprised if Toyota didn’t recommend replacement.Warranty Update: Purchased Carmax MaxCare warranty at vehicle purchase for $2099 to extend coverage for 4 years to October 28, 2023 or 125,000 miles.
Valley Plate Leak Covered for roughly: $1200 (limited by the warranty labor rates and time limits) actual install time was much longer and out of pocket would have been closer to $1800.
SAIS fixed by dealer as a result of the Valley Plate fix: Estimated at $1000, which would have likely been required eventually. While the warranty didn't cover this directly, it was needed because of warranty work so I'm including it in my warranty ROI analysis.
My view so far:
Warranty Cost: $2099
Out of Pocket Saved: $2800
ROI to date: $701
Keeping an eye on the radiator as the crack is forming but not yet leaking. Would be surprised if it outlives the warranty.