I always let the VX run no less then 5 minutes to warm up enough @ idle,if I don't then engine light says hi,especially if weather is pretty cold.
Beside that engine lacks power when i drives off with engine cold.
Once i read over the net that modern gasoline engines buildt from 1998 needs no warming time.....yeah right.
Even air fighters such as F-16 warms up before take off,how in the hell's name a regular engine shouldn't.
If this is the case escenario with you guys then you know what to do.