Small Engines (Lawn Mowers, etc.): Briggs & Stratton Generator, briggs stratton generator, briggs stratton

Question
I have a Briggs %26 Stratton home standby generator that runs on natural gas.  I have had problems with it not wanting to start up in the extreme cold, under 20 degrees.  When I try to start it, it cranks so it is not a dead battery.  I think it is cold oil keeping it from starting up.  I am trying to find a dipstick heater that I can put in it.  The heater can be no longer than 12 inches.  Do you have any suggestions?

Answer
Need to check if this oil heater will fit your engine.

http://www.sears.com/shc/s/p_10153_12605_07132710000P

Or

http://www.sears.com/shc/s/p_10153_12605_07132710000P

Or

http://www4.briggsandstratton.com/miscpdfs/RNT/Accessory%20Catalog%20ms3880.pdf

Bottom line, there are several options to fit your engine.

Eric