High mileage oils contain additives and seal conditioners that make engine seals swell. This can help to reduce sludge buildup and increase oil flow in older engines. These oils may also contain stop-leak additives that help bolster the seals and reduce leaking. Checking the oil level before driving will also help to extend the life of the engine. Continuing to drive with low oil levels can cause excessive wear and tear of engine parts.
Do High Mileage Oils Make a Difference?
High mileage oil is available in various weights. Different weights are rated for different types of conditions. The viscosity is a measure of the thickness of the oil. The higher the number, the better the oil will perform. For instance, an oil with a higher viscosity will prevent your car from leaking and be more resistant to thinning when hot.
If you are not sure whether your car needs high mileage oil, it is important to check the odometer. If it has more than 75,000 miles, it might be time for an oil change oil for high mileage 5.3 vortec. This is because millions of drivers are keeping their cars for longer than ever, and many of these vehicles are getting older.
High mileage engine oil comes in synthetic blends. The two types of high mileage oil are designed for vehicles with 75,000 miles or more. They should be changed when the vehicle has reached the recommended mileage, or if the engine has any signs of loosening or thinning. Another good sign to switch to high mileage oil is a change in engine noise.