What should my pressure be? Make Model Spec 45. 1.4 16V, 2.0TD45. 1.6 16V, 1.8 16V, 2.0TD OPT45. 1.8 16V, 2.0 V6 24V, 16 OPT45. 2.0 V6 24V45. CLASSIC, CLASSIC SE MODELS45. CLUB, CLUB SE45. GLI45. GSI