Sounds like you need to find out what block you have or what it's from,are you sure it's a 2.8?You need an oil filter for that specific vehicle,1985 Pontiac....bla,bla,bla.Do you have the old filter?If you do get the number off the filter and buy the same brand (diffrent manufacturers use diffrent numbers,so you need the same brand).If there is no manufacturer name on the filter we may be able to tell you the possible manufacturer by color.
[This message has been edited by James Bond 007 (edited 05-21-2004).]