This was about 20-30 years ago, and I'm sure I had the wrong engine oil for the Lake Tahoe area compared to the warmer weather on the coast. At the same time th

This was about 20-30 years ago, and I'm sure I had the wrong engine oil for the Lake Tahoe area compared to the warmer weather on the coast. At the same time that the guy from AAA recommended hot water for warming a diesel engine, he said that the water would have been more likely to cause problems with a gasoline engine. However, starting it did generally involve 5-10 seconds of running the glowplug, even when it was 50°F (10°C) outside. Do more modern diesel engines have high enough compression that they don't need to warm the compression chamber as much before it will combust? I did like driving a diesel car. It's seemed very utilitarian and was extremely reliable and durable.