I have a Force Gurkha 4 x 4 2017 model with 18000kms on it. A few days back, I was involved with flood rescue operations in my home state of Kerala, India. The car was driven in Bonnet deep water for many miles everyday. After the first day of running in water, the Transfer case had developed a whining noise, it was traced down to water in the transfer case which got in through the breather. We replaced the oil in the transfer case and the sound was gone, but now the car was leaking oil from the breather and a small puddle of oil is left on the ground when the car is parked after a drive. It took it to the service center, and found this
- The transfer case oil, though was at the correct level was contaminated with water again but not as much as the first time (our guess is the remaining water in the last drain mixed with the fresh oil we put in)
- The gearbox oil had not water in it, and was at proper level
- The front diff oil was contaminated slighly with water and the level was a bit low
- The rear diff was not contaminated with water and it had proper oil level
We topped up all the oils, and currently the car is running ok, but the gear shift is a bit notchy at times.
Please note: I experienced clutch hop after I got out of the water, you could feel the clutch grabbing and letting go during the initial engagement of the clutch, but this went away as the car dried out and after the clutch was engaged fully.
Also, the oil is coming out of the accumulator for all the breathers, A small metal cylindrical thing with 4 inlets where all the breather hoses are connected, and one outlet which is left free.
What is causing the oil to come from the breather hose? Is my diff overheating and causing oil to come out?