The car is a 1995 Mazda Miata M Edition. It has 82000 miles on it. I am the 4th owner. The previous owner says he used Castrol conventional every 3000 miles or 6 months.
My question is: Would it hurt to go synthetic, or should I stay with Dino oil? There is a small valve cover gasket leak if it matters.
From what I have read, one can go from synthetic to conventional but not the other way around, especially on higher mileage cars.
Also, the manual says 10w-30, what are some of the high performing conventional oils in this category?
I used conventional Castrol GTX in my previous car and had no problems.
My question is: Would it hurt to go synthetic, or should I stay with Dino oil? There is a small valve cover gasket leak if it matters.
From what I have read, one can go from synthetic to conventional but not the other way around, especially on higher mileage cars.
Also, the manual says 10w-30, what are some of the high performing conventional oils in this category?
I used conventional Castrol GTX in my previous car and had no problems.