Depends on how much it leaks. My old ML320 had main seal leak, needed to add 1/2 qt every 2,500-3,000 miles, did that for 4 years, no big deal to save $1,200. The ML320 had 235,000 miles when I sold it after 20 years of ownership.
I had the exact same 2006 TL, sold it in the summer of 2020 when...