Rob, The "problem" engine was used in the 90+91- 350sdl, 92+93- 300sd, and 94+95s350. If you ask your question on the diesel list at mbz.org, there is a man on that list that has about a 10-15page report on the 3.5liter cars. It's my understanding that it is NOT a cold weather problem, but I have no first hand experience. Good luck, Jay