I'm currently in the process of repairing my wrecked 300SD. I purchased a new auxillary fan but the one I got from the dealer is larger than the one on the car. While I can get mounting brackets for the new, larger one, the body shop guys don't know if I should use it as it may draw more amps from the car than the old, smaller one that came with the car. So my question is, can I put the larger one on the car without worrying about excessive battery drainage or should I just stick to the old, small fan? Thanks!

__________________
1999 Mercedes-Benz S600, 103K miles - garage queen
1988 Mercedes-Benz 560SEL, 89K miles - daily driver
2007 Hyundai Sonata Limited, 31K - daily driver