How much oil does a 94 v6 firebird need? May 30, 2022 by Ask Can’t tell with my owners manual. ✅ Answers ? Best Answer the 3.is a 4.25 qt engine. the 3.8 should be the same. the oil pan holds 4 and the filter is a variable. the smaller filter only holds .25 qts. the slightly larger one is about a half a qt.