- No end plugs for the 2005 XC90 2.5T dual VVT.chitownV wrote: ↑Sun Jun 21, 2020 5:29 pm...We are talking about old and aged seals that don't have to be broken to leak oil, but when there is extra flow from leaking VVT o-rings, it can definitely leak the volume of oil you see on your vehicle.
Again, you will need 4 cam seals not 2 since the rear will be exposed anyways, 2 o-rings, and 2 end plugs. The end plugs can leak too when re-installing with its aged/worn/flat o-rings. You will need a new belt too if there was oil. Best to remove the timing cover to inspect the solenoid gasket as well. Hope my direct experience helps.
- In my 1998 S70 GLT (Sold) w/o VVT, the cam leak was the same: one drop on garage floor/night. Very very slow leak.
The leak I have in my 2005 XC90 2.5T with 120K is the same: one drop on garage floor/night. VERY SLOW leak.
As to the leaking O-ring: the oil simply returns back into the camshaft area, nothing to do with the CAM seal.
In other words, let's say the cam seals are new (replaced) and the O-ring is leaking, you will not see any external leak.