Summer diesel blend will start to gel at only-12c or so . Winter blend depends on the region it's being distributed in . In BC that may be -20c where as here there are more additives which makes it good down to at least-45c . Local distributors here say if it weren't for Environment Canada regulations they wouldn't even bother to switch. No matter what we all end up paying more. As usual.back in the bygone days truckers carried a spare fuel filter in the cab. When the one suppling the engine clogged up they swapped them out and kept on trucking until it clogged again. By that time the first filter had warmer up and unclogged. Running winter blend fuel has pretty well eliminated those problems.;
Kerosene is a lot "dryer" than summer fuel though so it is best to treat the winter blend fuel so it doesn't wear out the fuel injection components.
