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My mom's '86 740T has two disturbing problems. It's losing coolant whenever it runs. The oil consumption is also slightly up, but hey it's 16 years old and coming up on 300k miles. I am worried that the head gasket is leaking since I can't find any obvious leaks and the overflow tank smells like oil.
Now there's water in the floorboards. The driver seat and both sides in the back are consistently wet. When I drove it this weekend I smelled antifreeze. I'd be afraid of a leaking heater core, but I don't see where it's dripping. The water just appears under your feet.
Any ideas and guidance to make sure I've diagnosed properly before I take stuff apart?
-richie
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