New 8.1L / Allison Owner Questions...

[esbstuff]

Just bought today an 2003 3500 4x4 with an 8.1 with an Allison trans. 145k on the clock and appears to be a decent used truck. This truck needs to be a long termer. I plan not to sell the truck till at least 250K and would like to keep till it rolls 300K.

My questions are...

1) Outside a once over and a oil and filters change is there any known problems with this combo that I should look at?

2) What should I do as far as preemptive maintenance? What is about to go? Basically, what can I change now, to save myself a breakdown later?

Thanks in advance!