- Buick Ownership
- 2013 Encore
A very common problem is a leak that develops at the plastic piece where the overflow tube connects down by the engine. It's a simple fix. The part is about $5 at the dealer (OEM 55354565) and simply snaps in place. One thing to remember after removing the old piece is that you may need to pluck out the broken end of the old part from the opening to make room for the new piece to snap in place. You will lose a little coolant, a quart maybe, so have some on hand.