I live in northern Virginia where it does get fairly cold. When these trucks were new everyone ran 30 wt in the summer and 20 wt in the winter. I can't find 20 wt any longer. If I ask for it, the young guys behind the counter get a puzzled look on their face and tell me they never heard of it.
Does anyone have a suggestion as to a multi grade that would more or less equal the old single grade 20 wt? Allen