i have a '93 corolla xe. it was submerged last Ondoy. fc was 10-10.5 kpl before Ondoy and it has been at 7.5 - 8 kpl after . carb was replaced with 5k unit. i have been using shell unleaded (non e10) and fuel consumption has improved to 8.5 kpl. my last fill-up was at shell with e-10 already. recently given a gasoline allowance, but i have to fill-up at caltex (the company has a credit line with them). just wanted to know your experiences with caltex silver for carb engines. thanks.