Hello to all at BITOG!!! I have a 90 Mustang GT w/ 145k miles. I have owned her since 93 with 3-4k mile oil changes. Hence my subject title, would you recommend Walmart SuperTech 10w30 or Advance Auto 10w30(dino's)? Or....? She is not driven hard these days,just a cruiser. She does not use oil between changes.Thank you all for your input!