4 degree's is about the temperature you start to struggle, esp if it's dipped lower during the night.
Veg emulsifies before water freezes, so low single figure numbers give you a right arse ache with 100% Veg.
Best cold weather mix is:
5-10% Petrol (for thinning)
10-15L Diesel (for performance, cold idle stabilisation)
100-200ml 2-stroke oil (for pump & injector lubrication)
40L Veg oil
I ran that mix in the depths of winter, car starts like a champ first time and runs brilliantly.
Veg emulsifies before water freezes, so low single figure numbers give you a right arse ache with 100% Veg.
Best cold weather mix is:
5-10% Petrol (for thinning)
10-15L Diesel (for performance, cold idle stabilisation)
100-200ml 2-stroke oil (for pump & injector lubrication)
40L Veg oil
I ran that mix in the depths of winter, car starts like a champ first time and runs brilliantly.