CM870 Winter Oil

[Rawze]

The solution for extreme cold starts would be a synthetic designs with cold weather in mind for the prevention of excess thickening. Syn oils are not superior but they do have the advantage in extreme temps vs conventional dyno oils.

of course, once the engine heats up to operating temps ... the advantage of synthetic goes away.. so the Q. would be is it cheaper to invest in a block heater (electric or diesel-fired) .. or use the syn. That would be a matter of application I suppose. I would think at -30C, a kerosine or diesel-fired block heater would be the better solution, as even a synthetic would have some troubles in those extremes.

just my limited viewpoint of it any ways.