Mine is directly in the coolant passage. In fact there are two freeze plugs in the back of the block. So it's easy to do both freeze plugs at the same time. Problem is I gotta take the intake manifold off to get access, quite a headache if one can't do the job.
Is there such a thing as too much? I'd hate to spend the extra money and time if it won't make much of a difference?
Should I just try one and see if it can cut it, or just go for it and put in two 400w freeze plug heaters. I also see those tank style and lower heater hose styles that I haven't considered before....
Thanks for your patience with my questions.
BTW, I also got the 150w pad heaters for the engine and trans oil pans
