with me the type of oil I’d like to be poured and confirm several times that I don’t have any other questions or concerns. If I’m not sure or forget what type of oil my car requires, you refer me to my vehicle’s owners manual and we find out the answer together. Even though you may have sneaked a peek at my windshield, it’s OK. Referring to my owners manual assures me my car is being fed the correct oil.I know it’s impossible for you to know everything, but when the situation arises, you turn “I don’t know,” into an opportunity