Since OCtane ratings are +- like 10% It makes little difference between ratings. My 95 runs fantastic on 87, No issues, It runs cooler on long highway runs at higher speeds with 92, But pinging has never been a problem. Dave __________________ Dave - PDX 1995 318ti - Active Black and Tan. 2005 330xi - Mtech 1 - 6spd - Orient Blue/Black |