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      12-09-2012, 10:47 PM   #17
First Lieutenant

Drives: Black E92 335i
Join Date: Jan 2011
Location: NC

iTrader: (1)

Originally Posted by marcvtec View Post
Idling from a cold start will clog your cats
i read this thread and the thread that the guy above me posted and want to clarify an issue...

So I know it isn't good to run the car hard before it has time to properly warm up on its own, but what is the issue with idling until it warms up and then you are on your way. Why would idling until its warm be any different than driving conservatively until its warm? Is it the moderate air flow from normal driving that helps this or would it be acceptable to idle for awhile to warm up if the majority of your drives aren't long enough to reach 160-170F oil temps.