im new with the jeeps and its going to sound like a dumn question btu i was checking my oil and i know you suppost to check it when the car is running but i was seen that it was 0m cool does it mean that it need transmision oil and it supost to be in the hot line.
Assuming it's an automatic. Not sure what you meant by "0m cool", but, if you check it before it's warmed up, you will be showing a little low on fluid. As the fluid warms up, it expands, and once fully warmed up, will show accurately. You CAN check and add fluid when it's cold, but DON'T overfill it. Once you have gotten used to how much difference there is between where it reads when "full hot", check it when it's cold. Now you know where to fill when cold. Not sure if this answered your question, but if not, let me know and I'll try to nail down a more appropriate answer.
Search Jeep Wrangler Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Jeep Wrangler Experts