According to the MB CD, my 300TE requires an auxiliary transmission fluid cooler to be installed for load over 1500KG

1500KG = 3307Lbs.

You'll be fine

__________________
2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k