Originally Posted by Zacharias

Is anyone using the simple in-hose heaters--the type that you splice into the lower radiator hose--which are supposed to radiate enough heat to make a difference in the block?

Are they worthwhile?

Also, does anyone have experience with the more complex ones, which also splice in some kind of tank and circulate the antifreeze through?

I know the latter type are expensive, and I'm not sure how I could plumb that into the old-type CC system setup with the servo.

Thx