Dave, do you experience winter where you operate the car(s)?

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1998 W210 diesel (wiped out by a texter)
Baum spring compressor "for rent"

Yes, we do. The car is garaged and it only goes out on warm, sunny days when. I don't drive it around town and avoid stop and go traffic/short drives.

I realize that syn offers better cold start up protection but it isn't that necessary for me.

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1974 240D "Boldie" 170K.- New timing chain/freshly rebuilt IP/replaced valve seals/injectors/upgraded stereo/new Bilsteins with Yokohamas/fresh paint and rocker panels plus lots of welds.