“Odds are that when you paid off your car loan, you no longer had any installment loans. An installment loan is something that’s paid every month, while a credit card is called a revolving loan.
To keep your credit score high, you need a mix of revolving and installment loans. A 50-point drop seems substantial enough for you to find another type of installment loan.
Some credit unions offer savings loans or low-interest personal loans to boost and diversify your credit. With such a drop, paying a few bucks a month in interest might be worth it to get your credit score back up.”