Of my 12 vehicles only 2 use any oil between 6,000 km changes, a 97 Mazda pickup that has 90,000 miles on it and was owned by an Amalia dealer (1/2 qt at 3,000 km), and my 95 4Runner that is now around 175,000 km (1 qt at 6,000 km). This one is due to a poor rebuild at 100,000 km when I recovered it from the river. This one is designed for 20w50, so I use a group I CH-4 (now CI-4)