Roger Long wrote:

We've found that just a couple hours of electric heat on the pan alone are
enough so oil temp comes up on taxi or in flight as fast or faster than in
the warm months.

Ah. That answers my question. Now. How do you define a "couple hours"? Two, or
some indeterminate number between two and five (that's my wife's definition)?

In any case, I'll take my propane bottles. My CHT gauge will be off the peg in
20 minutes when the OAT is 5 degrees F. Propane doesn't work well below that
temperature, but then, neither do I.

George Patterson
If you're not part of the solution, you can make a lot of money prolonging
the problem.