Re: axle fluid change on 09 laredo 4.7 QD2?
Should be ok if you aren't doing any towing/hauling/off-roading.
You could always stick your finger in the rear diff and get a whiff of the fluid to see if it smells burnt. It smells bad regardless but it shouldn't smell burnt.
2013 WK2 Overland HEMI 4x4
Bright White / New Saddle