Leaking connector on oil line
If its a AN type fitting then check the 37 flare for damage. Also you might be able to find some nose seals. They slip over the flare and made of copper and provide a leak tight connection for AN fittings. We use them at work or we machine a groove in the flare for a teflon insert to help the sealing.
Gary
I've tightened the hell out of it and it still drips. I was thinking of using teflon tape on this. Anyone have more experiance with oil lines? Should I just replace the connector instead?
These are mitsubishi Turbos.

