Locating and stopping leak on my van
Hello. The most straightforward way to achieve a "leak-free" transmission is to raise and support the vehicle safely and inspect the transmission with the engine running. In some cases, it will be good to check the transmission in gear while it is simulating a load. The source is usually evident at this point: input/output shaft seals, pan gasket, dipstick o-ring, hydraulic fluid lines, shifter shaft seal, and so forth. To get a precise diagnosis, I recommend having certified technician diagnose the transmission fluid leak so that this can be resolved.
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