Hi Scotty, I own a Mazda 2, 2011 with 100K miles on that. I use 5W30 engine oil, recently I realized the manufacturer recommended 0W20, should I switch to? is it gonna damage the engine?
You should be fine staying at the 5w30 its a good idea depending on your driving habbits to go up a thickness in oil as the miles get higher but i wouldnt go to thick from the original oil for to much oil pressure can cause major problems does your cars engine sound bogged down or stressed when running? Does the car have an oil pressure gauge?