I've looked for a post by Stevebfl about this topic that I remembered about but I coudn't find it. The problem is my '94 E320 wagon with 230,000 miles on it is starting to drift and float a little on the highway and has become more sensitive to wind. Also, the most noticable thing is much more oversteer in corners. The tires pressures are all about 35 psi and the car still has the original shocks. It feels like I'm correcting the steering from the back of the car. Where should I start since almost all of the parts are still original believe it or not.

__________________
dtf
1994 E320 Wagon (Died @ 308,669 miles)
1995 E300 Diesel (228,000)
1999 E300 Turbodiesel ( died @ 255,000)
2006 Toyota Tundra SR5 AC 4X4 (115,000 miles) rusted frame - sold to chop shop
2011 Audi A4 Avant (165,000 miles) Seized engine - donated to Salvation Army
BMW 330 xi 6 speed manual (175,034 miles)
2014 E350 4Matic Wagon 128,000 miles
2018 Dodge Ram 21,000 miles