[yarisbaby]

Hello everyone! I've found cool areodynamic simulation of my car but can't post link yet. You can find it on youtube just type yaris totalsim. Air flow over top grill is good and bottom one is bad. I've tried block top grill at winter time and radiator fan was running more often at traffic idling and battery life decreased much quicker. When I cover whole bottom grill transmission warmed up much quicker and less wind noise on highway, radiator fan was running more often as well at idle. Is it better to block whole or partial top or bottom grill in my Toyota Yaris Hatchback at winter time?