My dad recently bought me a 1990 Suburban 2500 4x4. It has 63,000 miles on it and seems to be in perfect running order. Before I got her... she spent her entire life as a SWAT team vehicle in Atlanta and appears to have been maintained very very well. 14bolt SF 8 lug rear, 10 bolt 8 lug front. 241 TC. TH400 tranny ( I sure wish it had a 4th gear like the 4L80 ) I love the vehicle and plan on taking great care of her. What are some things I should know? Any special knowledge I need to know about this particular year model or suburban? I noticed when I changed the oil today that the drain plug had a magnet on it and had already caught some metal filings. Is that standard? Also.. it had a Baldwin E5 oil filter on it which is twice the size of the Fram I put on it. Are the baldwins good filters? Will the fram be ok?