- Buick Ownership
- 2005 Buick Lesabre Custom, 1988 Buick Reatta
Just bought a 2005 LeSabre with 50k original miles. It's been sitting for almost 4 days (been checking every day for any type of leak) and just today I noticed a few drops under it. It's coolant and I traced the leak to be coming from the radiator cap or somewhere near it. The engine starts/ sounds/smells great. The oil is fine (no milkiness). No smoke from the tailpipe. No check engine light. When I first opened the radiator cap it was almost overflowing. The coolant reservoir levels are on point. Could it be a bad cap?