Make Model Spec K5. 2.0I, 2.4I (KIA -DYK -CHINA)OPTIMA, 1.7 CRDI. TRIM PKG 1.OPTIMA, 1.7 CRDI. TRIM PKG 2 -TECH.OPTIMA, 1.7 CRDI. TRIM PKG 3, & 2 -LUXE.OPTIMA. 2.0 MPIOPTIMA. 18 OPT.OPTIMA. 2.0 GSLOPTIMA. 2.0TOPTIMA. 2.4 GDI GSLOPTIMA. 2.4 MPIOPTIMA. 2.4 MPI HYBRID What should my pressure be?