That all depends on which one you got Tezza-Shea. There's more than one Magnatec 5W-30. What spec is it? A1/A5, A3/B4, C2 or C3. A3/B4 & C3 are the only ones really suitable for the 3SGE. A3/B4 would be the best option out of those two. A1/A5 & C2 are designed for fuel economy & too thin for an older performance engine IMO.