My '83 300D (377k miles) is showing it's age. In the morning after a cold (~20F) night it's difficult to start. Compression is not great, as you can guess, but I'm not interested in rebuilding the engine. I already use Delvac 1.

Plugging in the standard issue block heater helps.

Would installing & using a radiator hose style block heater (~$85.00) greatly ease the struggle in the morning?

I'm trying to guage the investment.

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JWJ
1983 MB 300D - > 430,000 miles - Deep Blue - Bilstein Comforts - 0-60 in 24 seconds - 27MPG
1985 MB 300TD (wagon) - > 275,000 miles - Manila Beige - Thule rack - 0-60 in 18 seconds - 22 - 25MPG
Biodiesel, Mobil Delvac 1, and Viton fuel lines!