When to drive away from 'Cold' start

[Terrific-In-Tahoma]

I have been experimenting with the 'best' time to drive away from starting.

Recently in the bellow freezing temperatures, the start is a bit rough. Have added additional additive to the fuel.

I suspect it is the cold getting to the whole system, but have been able to measure the load on the vehicle as a percentage of available from the el cheepo scan tool (Not ScanGauge).

Has anyone else done MPG comparisons vs Driving off after start?

See chart attached.

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X-Axis is Temperature in Degrees C
Y-Axis is %Load (So far -30C observed)

 

[VeeDubTDI]

Your picture was broken - please repost it.

 

[blackbeasst]

Holy html barman! Might wanna get your edit on there!!

 

[Terrific-In-Tahoma]

Holy html barman! Might wanna get your edit on there!!

Might try now...

Apparenty copy / past is not the same between applications on Win7x64.

 

[VeeDubTDI]

Sometimes there's a glitch and that happens.

 

[CopaMundial]

Do you have the grill / radiator blocked off?

 

[Ski in NC]

%load right after start will be high in super cold temps due to very high lube viscosity. No surprise there. Engine has to work hard to merely spin. So if you can, drive gently in first few miles to warm things up. No heavy go pedal, no high rpms. Once all the way warm, which might take 10miles, let 'er eat!!

 

[8v-of-fury]

As soon as you have oil pressure, it is safe to drive (for the conditions of course).

Idling is inefficient at getting the engine up to temp, more time spent cold is more wear and tear. Keep off the pedal, and out of the boost, and it will warm up much faster.