Yes, oil from the transfer case can get into the automatic transmission through the following routes:
* Malfunctioning seals: The seals (seals) between the transfer case and the automatic transmission can wear out or become damaged over time, allowing oil to leak.
*Cracked Case: If the transfer case or automatic transmission case cracks, it can create a path for oil to leak between them.
* Crossed Cooling Lines: On some vehicles, the transfer case and automatic transmission coolant lines may be connected, allowing oil to flow between them if there is a leak.
* Internal passages: Some transfer cases have internal passages that can connect the transfer case and automatic transmission oil systems, allowing oil to flow between them.
Oil getting from the transfer case into the automatic transmission can lead to the following problems:
* Reduced oil level in the automatic transmission: An oil leak from the transfer case can reduce the oil level in the automatic transmission, which can lead to insufficient lubrication and overheating.
* Contaminated automatic transmission oil: Transfer case oil may contain additives or contaminants that can contaminate the automatic transmission oil and cause shifting problems.
* Damage to the automatic transmission: In the worst case scenario, oil from the transfer case getting into the automatic transmission can lead to serious damage to the automatic transmission if the oil is not promptly drained and replaced.