Inspect the transmission pan and housing for external issues.
Critical. This indicates coolant has leaked into the transmission (often called "the strawberry milkshake of death"), which requires immediate professional attention. 2. Physical Inspection (Leaks and Sealing)
Check for "weeping" or active drips. If you see excessive RTV (silicone sealant) bulging out from the pan, it may have been applied too thickly, which can lead to internal clogs or external leaks. ratemytranny
Usually indicates internal mechanical slipping (low rating). Summary Rating Scale Description Action Required 5/5 (Perfect) Bright red fluid, instant engagement, no leaks. None; maintain regular service. 3/5 (Fair) Brownish fluid, minor weeping, high mileage. Drain and fill fluid; replace filter. 1/5 (Failing) Burnt smell, slipping gears, active clunking. Immediate rebuild or replacement.
Poor. The fluid is oxidized. If it smells "burnt," there is likely internal friction material damage. Inspect the transmission pan and housing for external issues
Rate the transmission based on how it behaves while driving:
Shifts should be firm but smooth. "Slipping" (engine RPMs rise but the car doesn't speed up) or "hunting" for gears indicates a failing unit. Usually indicates internal mechanical slipping (low rating)
Look for leaks where the driveshaft or CV axles meet the transmission. 3. Operational Performance