I started changing the oil with my daughter in my 2021 Mustang GT and had to leave my daughter to finish up the oil change. I told her when I left to grab (2) 5qt. jugs of Castrol Edge and put it in. When I came home she had put the car back on the ground, started it and checked for leaks and left it there. As I was looking around the bench in the garage, it appears she put two different types of Castrol Edge 5W30 in the car. She used one jug of API SP Castrol Edge and one jug of API SL Castrol Edge A3/B4. This jug of oil is something I bought maybe 3 years ago when the Pep Boys retail store was closing and bought a bunch of oil really cheap.
Question....is the brew of API SP and API SL A3/B4 going to present a problem in the car. I tried to find a VOA of the Castrol SL A3/B4 but was not successful.
Question....is the brew of API SP and API SL A3/B4 going to present a problem in the car. I tried to find a VOA of the Castrol SL A3/B4 but was not successful.