[Dare Devil.....]

Try this out

pawn Code:

CMD:refuel(playerid, params[])
{
    if(IsPlayerInAnyVehicle(playerid) && GetPlayerState(playerid) == PLAYER_STATE_DRIVER)
    {
        new vehicleid = GetPlayerVehicleID(playerid);
        new engine,lights,alarm,doors,bonnet,boot,objective;
        GetVehicleParamsEx(vehicleid,engine,lights,alarm,doors,bonnet,boot,objective);
        if(engine == VEHICLE_PARAMS_ON) return SendClientMessageEx(playerid, COLOR_RED, "You need to shut off the engine before filling up (/car engine).");
        if(!IsAtFuelStation(playerid)) return SendClientMessageEx(playerid, COLOR_RED, "You're not at a fuel station.");
        if(GetVehicleModel(vehicleid) == 481 || GetVehicleModel(vehicleid) == 509 || GetVehicleModel(vehicleid) == 510) return SendClientMessageEx(playerid,COLOR_RED,"This vehicle doesn't need fuel.");
        if(VehicleFuel[vehicleid] >= 100.0) return SendClientMessageEx(playerid, COLOR_RED, "This vehicle's tank is already full.");
        if(RefuelingVehicle[playerid] == 1) return SendClientMessageEx(playerid, COLOR_RED, "You are refilling your vehicle's tank.");
        SendClientMessageEx(playerid, COLOR_WHITE, "Refueling your vehicle's tank, please wait.");
        RefuelingVehicle[playerid] = 1;
        RefuelingVehicleTimer[playerid] = SetTimerEx("ReFill", 1000, true, "i", playerid);
    }
    return 1;
}

pawn Code:

forward ReFill(playerid);
public ReFill(playerid)
{
    if(!IsAtFuelStation(playerid) || !IsPlayerInAnyVehicle(playerid) || VehicleFuel[GetPlayerVehicleID(playerid)] >= 100.0 || GetPlayerCash(playerid) < 1)
    {
        StopRefueling(playerid);
    }
    else
    {
        new engine,lights,alarm,doors,bonnet,boot,objective;
        GetVehicleParamsEx(GetPlayerVehicleID(playerid),engine,lights,alarm,doors,bonnet,boot,objective);
        if(engine == VEHICLE_PARAMS_ON) return StopRefueling(playerid);
        VehicleFuel[GetPlayerVehicleID(playerid)] += 1.0; RefuelingVehiclePrice[playerid] += 30;
        if(VehicleFuel[GetPlayerVehicleID(playerid)] >= 100.0) VehicleFuel[GetPlayerVehicleID(playerid)] = 100.0;
    }
    return true;
}

pawn Code:

stock StopRefueling(playerid)
{
    GivePlayerCash(playerid, -100);
    SendFormattedMessage(playerid, COLOR_WHITE,"Your vehicle's tank has been refilled for $100.");

    new mypoint = -1;
    for (new i=0; i<MAX_POINTS; i++)
    {
        if(strcmp(Points[i][Name], "Fossil Fuel Company", true) == 0)
        {
            mypoint = i;
        }
    }
    for(new i = 0; i < sizeof(FamilyInfo); i++)
    {
        if(strcmp(Points[mypoint][Owner], FamilyInfo[i][FamilyName], true) == 0)
        {
            FamilyInfo[i][FamilyBank] = FamilyInfo[i][FamilyBank]+(RefuelingVehiclePrice[playerid]/10);
        }
    }

    RefuelingVehicle[playerid] = 0; RefuelingVehiclePrice[playerid] = 0; KillTimer(RefuelingVehicleTimer[playerid] = 6000);
    return true;
}