Quote:
Originally Posted by squirrl22
Diesels like heat- they tend to run best when you put in the highest temp thermostat you can find. Raising the temp on any IC engine raises the thermal efficiency- Gas or diesel. I got my best MPG on my 1986 Jetta diesel by using this coolant https://www.evanscoolant.com/ and partially blocking the radiator. |
Having replaced the stat, I'm happy with how it heats up now, and the roadtrip served to bleed the system through well.
At the moment I'll leave her be - I think the more pressing work will be getting the autobox fluid changed as I think it's a bigger issue at the moment