Yes, valve stem seals. Valve stem seals is the term I'm used to using but it seems many folks are also using valve guide seals interchangeably and that the term they used on my estimate. It's definitely losing/burning a bit of oil.....about a quart every 600-700 miles depending on the type of driving.

X53Jay4.8is it is definitely smoking a lot once it has warmed up and following a long idle at a stoplight or stop/go traffic. Can you enlighten me some more on the breather hose contributing to this? The breather hoses I am aware of are at the front of the engine, so am not sure how they are contributing to the leak at the rear.