I noticed a small amount of oil dripping at the compressor side of the turbo and I can also see it at the connections to the intercooler also. The turbo has been high pitch whistling more often lately also, ear piercing at times. Is this normal? 2020 Ram ecodiesel with only 7500 miles. Should I be worried, is the oil in the charge area s normal? Is the high pitch normal for colder weather this time of year? TIA