Just got ‘4cycle’ for the mower, but cant say I’ve actually looked for any for cars. Mazda calls for full synthetic. I usually run either full or blend in the Journey. Was running QS ‘Defy’ in the Duster. Was supposed to be high zinc. Don’t know if they still bottle it under that name. Should change that even though hardly any miles. So, I guess I will start looking what I can get…