PSF-3 is specified in the Hyundai owners manual. Well, in research I notice Honda does not utilize the power steering fluid that "GM, Ford, Chrysler & most foreign cars" utilize. Does Hyundai utilize the power steering fluid that "...most foreign cars" utilize ? My 2003 Elantra is squeaking when backing & turning out of garage. I notice its power steering fluid well is seemingly a little low, but worry about the fluid compatability. Surely, it won't hurt to try supplementing it with a little of additional properly compatible fluid (?). Or should I wait until the next scheduled service at the dealer. Its got 40,000 miles on the odometer, and is bumper to bumper covered by extended service contract, which I urge, especially for the mechanically-challenged types like me.