Make Model Spec 607. 2.0 HDI, EXECUTIVE 607. 17 OPT607. 17 OPT II607. 2.0 16V 136607. 2.0 HDI607. 2.0 HDI 05-607. 2.2 16V607. 2.2 HDI 16V607. 2.2 HDI 170 EXECUTIVE607. BASE What should my pressure be?