Q: I have a question about oil filters. I change my own oil on two Chevrolets. They use the same filter. One is a 1996 truck, the other is a 2001 S10 blazer. When I buy filters at parts stores, the filters say for synthetic oil. I use semi-synthetic oil. Is it OK to use those full synthetic filters with semi-synthetic oil?
B.M., Colorado Springs, Colorado
A: Sure. All oil filters are compatible with all types of oil. Generally, the higher priced filters have better filtration, down to 25 microns or less. (A micron is a millionth of a meter.) This is important for anyone who wants to stretch their oil change intervals when using synthetic oils that claim extended life.
