On Saturday, December 19, 2015 at 6:04:43 PM UTC-6, Tony Hwang wrote:
Uncle Monster wrote:
On Saturday, December 19, 2015 at 2:58:03 PM UTC-6, M. Stradbury wrote:
On Fri, 18 Dec 2015 18:59:52 -0700, Tony Hwang wrote:

There is winter grade propane.

Really?

You sure?

Propane is a simple chemical.

C-C-C

How do they make 3 carbons (and a few hydrogens) a "winter" grade?

The supplier mixes in hydrogen.ヽ(€¢€¿€¢)ノ

[8~{} Uncle LPG Monster

We used to fill winter grade on our camping trailer to use in winter
time. I heard it is mixed with Butane to keep it from freezing. Well
there is winter grade gasoline too.

I was going to mention Butane but I thought, without researching it, that Propane had a lower boiling point. I recall reading something about refineries blending winter grade gasoline to have a higher vapor pressure so pollution standards could be met. I'm no chemist but I can use The Internet to find out. ヽ(€¢€¿€¢)ノ

[8~{} Uncle Gas Monster