Overfilled differential due to leaking automatic transmission on Porsche 944

Submitted by Vehicle Owner · May 29, 2025
Published by RepairPal

Problem overview

Automatic transmissions can leak internally and cause the automatic transmission fluid (ATF) to mix with the differential oil. An overfilled differential and/or a low fluid level in the ATF reservoir is symptomatic of this. If not repaired immediately, the transmission will fail; the pinion seals will also need replacement.

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