Ford's first Model T engine had four cylinders in a row. Some luxury cars of the 1920s had inline engines with as many as eight cylinders. Engines with as many as 12 or more cylinders in a row have been used, but mainly in large marine and stationary engines. Of course smooth running is only one goal.
In brief: Antibiotic eye drops. They start in hours but they may take 7-10 days to get rid of the bad bacteria. ...If you start antibiotics use them as directed, usually 7 days.. In brief: Antibiotic eye drops. They start in hours but they may take 7-10 days to get rid of the bad bacteria.
1 If pain occurs, discontinue treatment and seek medical attention.  Oral antibiotics are usually recommended for discharge from the ear, nose, or mouth. If infection develops, continue antibiotics for at least five days after all signs of infection have cleared. Tell your doctor of any drug allergy prior to starting any antibiotic. The doctor will recommend the right antibiotic. Some can cause sensitivity to the sun, so use a sunscreen (at least SPF 15).