Hi I'm a super new to toyota and working on cars. I just purchased a 1998 4runner sr5 v6 with 212k miles. Long story short I took the truck to get an alignment and the mechanic pointed out a seal that was loose and demonstrated by turning the steering wheel, sure enough I looked and it was loose. I don't know much about cars and repairs other than changing the oil , changing a spark plug and changing a battery. The shop was going to charge me 265 to replace it and aligment, my question is, is it cheaper if I do it myself or am I getting a good price? Also what is that seal and what does it do?