Coolant leak in 1999 Chevy Malibu 3.1
 

Appears to be coming from the passenger side and is lower on the engine compartment so I can't get a clear view of where it may be coming from. All hoses look good but I am loosing coolant by the gallon. In my somewhat experienced opinion, the coolant looks to have a bit of oil in it. But then again, I have used both the orange and green coolant so it's hard to say. My question is, is there a common issue with this 3.1 with coolant leaks like the one I have described? Any help would be appreciated!

Are you sure it's external leak? I'd suggest pull the dipstick, these engines have an issue of lower intake manifold problems.

I'm not sure of anything at this point. It's been leaving puddles underneath the passenger side so I'm thinking it may be the water pump but I'm afraid it's the lower intake like you suggest. She's due for an oil change so I'm going to do that first and check the oil to see if there is any coolant mixed in. Thanks for your insight!

Check the easy spots first like in this video