I used Sea Foam on my old Maxima and it worked wonders.

I know it can be used in the gas tank, crank case, or intake but have read that the intake method is safest and most beneficial.

However, I'm not quite sure which vacuum hose on my S60 is the correct one. Can somebody point me in the right direction?

Thanks,
Zach

 

There is a bunch of them, one that goes to the manifold is good. They crack easily.

 

Thank you. Might you be able to tell me geographically where the correct hose is? This is not my area of expertise and easy to destroy my engine if I choose the wrong one