so i did an oil change on February 12th,noticed my car was sounding funny,checked the dipstick and no oil,i got the oil change at 187831 miles am at 189819, is there something wrong with my engine.so i added two quarts of valvoline synthetic oil two days ago and i also added some lucas oil synthetic oil stabilizer and now i have some white smoke coming out of my exhaust, did i just mess up?