Rental property vehicle expense

I have a rental property. Through out 2017, I drove a total of 87 miles for repairs, showing the house to potential tenants, etc. However, TurboTax wants to know the total miles I drove the vehicle in 2017. I do not have that information, at least not accurately. What do I put in the total miles field? Or, does this mean I cannot claim this expense for my rental property?