TheGr8Ginger

Sadly, I'm pretty sure my engines toast, as last I ran it (3+ months ago), it had SUPER foamy oil. Noticed I'd be going through a gallon or more coolant a week often, so I'm leaning towards the water pump failure. I'm hoping somebody here's has some input on what I can expect when talking to a mechanic. I'm curious as to what this community would say to expect regarding price with either an engine replacement vs rebuilding the current engine. Realized I haven't given vehicle specs yet: Year: 2013 Model: Edge SEL AWD Sadly, I've also still got a loan on this thing (<$4k), and am focusing on just getting that paid off first, as my better half has a Yukon she's graciously letting me borrow. Just miss the mpg efficiency enough to FINALLY start doing some research into this. Pretty sure I have a 3.5, but I'm a nerd not an engine guy, so correct me if I'm wrong. Outside of some better HP/Torque, would there be any benefit to swapping up to the 3.7? I mostly live off cruise control (+5mph speed limit at most), but occasionally enjoy feeling a little young again and putting a little bit more peep, so would the 3.7's power difference be that noticeable? If MPG is a noticeable difference, is it yay or nay with outcome? Thanks for any input you're able to provide!