So what makes a high mileage oil different?
From Pennzoil/Chevron data sheets, the high temp viscosity is about halfway up to the next grade. So if I want a 10w-30 high mileage oil change I use 3qt 10w-30 and 2qt 10w-40 regular oils, and I don't pay an extra 50 cents per quart.
What else am I missing?
From Pennzoil/Chevron data sheets, the high temp viscosity is about halfway up to the next grade. So if I want a 10w-30 high mileage oil change I use 3qt 10w-30 and 2qt 10w-40 regular oils, and I don't pay an extra 50 cents per quart.
What else am I missing?