When I switch on the vehicle and check the oil gage, a small quantity is spraying through that oil gage pipe. I have taken to a diesel mechanic near by, he told, this is the symptom of decompression.But there is no smoke (even a small quantity) or power loss and there is no loss of oil, while checking oil gage.here was a small oil leak shown down to turbo exhaust. I have taken to service, and I have changed diesel separators, airfilter etc. After that I have ran around 200kms, and I found oil drain in my car porch. When I checked, the leakage is from diesel separators, and some other small pipes.