Loosing coolant. When I crank car it leaks a lot of coolant, but stops when driving. If I fill the reserve up I can't see it leaking anywhere. As soon as I put it in drive it leaks like a faucet for a few seconds. Thinking a hose? Oil is clean.
If it is not obvious from where it is leaking, your best bet is to go on a car wash, and clean the engine as much as you can. Leave the car dry, fill up the coolant, and then try to replicate the issue.
Also before you try to replicate the leak, it might be a good idea to remove any plastic covers from the top and the bottom of the engine.
I had a similar problem and could not find the leak. I did the above recommendation (cleaning the engine) and the leak was the at the intake manifold gasket (right rear side).
I hope this helps.