Quote:
Originally Posted by nemo
So then an oil pan warmer might produce better fe than a block warmer. I wonder if this is in part caused by oil viscosity? The 212 oil temp is that the spec for your car? I know this is a general rule for block temp.
|
I believe this myself and have said it before with little support. As you say the oil comes up to temp so slow and the head is where the combustion is so it comes up fast.
Just acedotal but my mom lives on top of a hill and there is a huge noticible difference in engine braking (& injectors off) going down that decline on a just started engine vs an up to temp one. The only factor involved is oil viscosity.
I see it on my scangauge too, air temperature is irrelevant on my idle fuel economy, its all coolant and oil temp, I did see a difference too when I changed oils from summer to winter oil.