Make Model Spec C4 AIRCROSS. 1.6 HDI 115 2WDC4 AIRCROSS. 1.6 HDI 115 4WDC4 AIRCROSS. 1.6I 2WDC4 AIRCROSS. 1.8 HDI 150 2WDC4 AIRCROSS. 1.8 HDI 150 4WDC4 AIRCROSS. 1.8 HDI 150 RWDC4 AIRCROSS. 18 OPTC4 AIRCROSS. 2.0 150 RWD What should my pressure be?