The little black box in the back of the block what does it do? Also I did my swap yesterday and I noticed once it was done and about 50+ miles later that I was low on oil. I just added 4 quarts as soon as I was done with the swap. Do you think because of the black box getting loose it lost oil there? Thanks guys.

 

vaccum box? :dunno:

 

it relieves pressure from your block, and is tied into your pcv valve system. Both the hoses need to go into the top of it or your car will run wrong.

 

It is officially called the breather chamber. It collects oil vapor from the crankcase and sends it through the PCV valve where it is then sent to the manifold to be burned.

 

I don't think the answer to your question can get any better than that :chuckles:

:thumbup: Shmoo

 

Thanks. It helps that I also have the 1400 page factory service manual at home. :thumbup: