Make Model Spec ASTRA H. GTC, COUPE SPORT, COSMO 17 OPTASTRA H. GTC. 1.2, 1.4, 1.3 CDTI, 1.6, BASEASTRA H. GTC. 1.2, 1.4, 1.3 CDTI, 1.6, EDITION 16 OPTASTRA H. GTC. 1.6 16V SPORT, 1.6 16V COSMOASTRA H. GTC. SPORT, COSMO 18 OPT What should my pressure be?
