11/05/2026
Here's an easy weekend detective trick: slide a clean piece of cardboard under the front of your car overnight. Dark brown or black spots in the morning? That's usually engine oil, and a wet, grimy drain plug like the one in this photo is one of the most common culprits. A worn crush washer or tired threads can let oil seep out a little at a time.
At Eberhardt's Tire and Automotive in Fullerton, we check the drain plug, washer, and oil pan threads on every oil change, so your engine keeps its oil where it belongs and your driveway stays spotless. Catching a small leak early is a quick, inexpensive fix, and a lot friendlier than a low-oil light on the freeway.
Proudly serving Fullerton, Anaheim, Placentia, and Yorba Linda since 1961. Cardboard came back spotted? Call (657) 695-2404 and ask for Dan or Teo.