I have a 2004 Solara with a 3.3 V6( calls for 5w30) I want to run a really good oil in this motor. I will change it at 3000 miles. I tired Mobil 1 5w30 in my 2003 Tacoma 3.0 V6 and it made the motor valvetrain loud. I went back to GTX 5w30 and she normal now. Would Mobil 1 5w30, 10w30 or a dino be best.