-21 degrees celcius. cold start of 24 valve dodge cummins. Not plugged in, and regular 15W40 oil. takes a while but eventual goes!! Just tried it out of curiosity not plugging it in to see how it would go.
Dodge Cummins cold start -29c
05 Cummins very cold start, never been plugged in. Out side temp. -29c
which is -20 fahrenheit.
Truck has 4" cat back MBRP Exhaust
and an AEM cold air intake.
Real diesels dont need to be plugged in
Dodge Cummins Coldstart@-10*C
started the dodge for the first time in a week today at -10*C and it didnt
start worth anything. the grid heater elements are screwed so they dont
heat up as fast as normally.