I think your car will be fine with 5W-30 or 10W-30. When the engine is warm, both oils will behave like a 30 weight oil. If you have 5W-20, you should change it.
I think your car will be fine with 5W-30 or 10W-30. When the engine is warm, both oils will behave like a 30 weight oil. If you have 5W-20, you should change it.