hey guys,
its been a while since last posting to the forum. i just have a quick question as to blockheaters, cold weather etc. i have a recently rebuilt engine in my '77 240D and it has had no problems popping into action on these 18F mornings lately. i do not have a heater installed, but have been thinking of putting one in. my question is whether or not the use of a block heater, even when there is no trouble with starting, will prolong the life of my engine. also, what do you guys think about warm-ups? let it sit and idle in the driveway for 10 mins or just take off? thanks

'Boo '77