As I was driving around a curve I noticed that my oil light flashed on. It was blinking not staying on. I immediately pulled over and checked my oil the dipstick looked dry. When I restarted my car light did not come back on and I went to the hardware store (6 blocks away) added a quart and checked dipstick again still looked dry. I thought I wasn't checking it right. Went to valoline had them check and top off, they added 2 more quarts. So 3 quarts low out of 4.5 quarts. Did I ruin my engine. No weird smoke. No weird noise. My care has 166k miles changed oil every 3-4 k miles never had an issue with low oil.