New to me 143 H

Hi everyone!
I just bought an ex-county machine off of BigIron Auctions.
CAT0143HV1AL01163
Pretty low hours, around 4500. Called to see if oils needed changed up, they said it had been in shop last winter. Oils changed, drive chains changed, trans solenoids replaced, and some maintenance done in the front wheels.
So a couple questions.
Should the front wheel assist be used at all times? Is there a choice?
Any quirks I should know about on that machine?



New to me 143 H