This may be of interest,may not.
6000 mile 1.5dci(tuning box on it)
Hot starts are fine, cold starts are fine, actually seems more responsive when its cold,like a choke on a petrol engine.
Kinda cold starts are the trickiest , like if its been left for an hr + in cold weather.
Then the engine turns over a couple of times,starts and seems rough for maybe 30 sec.
Must be something to do with the sensortrickery.
Weel start first time cold,weel start first time hot but for inbetweenies were not going to spend another £50 per car to ensure its allways the same whatever the temp of all the components.
It just feels like that anyway.Perhaps with age the various sensors/mechanisms get worse?.
I recently got a fill of home heating
(diesel). I got them to decant 50L of paraffin/kerosene into the heating tank. I also got 50L of kerosene into a container.Thats like 11gallons.
I have 2 paraffin heaters I havent used in awhile,or I could throw throw it into the central heating storage tank.
I mainly have it for testing in the car.
I might use it at up to 5% concentration if things get really cold,that would be like 2-3 L in a full tank of diesel