I have a Weber 38 that seems to be running rich. Just to see what would happen, on the last fill-up I tanked up with a mix of E85 and 87 octane. The mix was 2/3 87. The FJ starts up and runs fine but I was wondering what the long term affects will be on the fuel pump, fuel lines, and so on. 2F with DUI and MAF header timing @10btdc.