I looked tbru the stickgs and just tryi g to see if there is anything missing or particular to my year i should consider. I'm heading tomorrow to look at a 99 F-450 reg. cab flat bed.. It's a 4x4 with the 7.3. It has 160,000 miles on it. I'm looking for any quick tips to look for things that could be wrong while I'm there like removing the oil fill cap and see if its pushing air. Any suggestions??