So I am a complete newb on late model Mustangs...Ok that's out of the way. I recently purchased my wife a used 2021 GT 5.0. As of today it has 10K miles on it and since I do not know the history of the oil or the last change, I plan to change the oil and filter this weekend. However, I am a bit confused on what weight oil to use. The owners manual recommends 5W-30...which is what I will likely use. However, I have read on a couple well known websites that say to use 5W-20. Why is this?
We live in North Alabama and I use 5W-30 oil in all of our other newer vehicles which recommend 5W-30. So this is more of a curiosity as to the disconnect...at least from what I am reading.
We live in North Alabama and I use 5W-30 oil in all of our other newer vehicles which recommend 5W-30. So this is more of a curiosity as to the disconnect...at least from what I am reading.