2005 XC90 T6 Oil Leak

mikmod · Post by **mikmod** » 27 Jun 2016, 04:20

Hello
I have 2005 XC90 T6 2.9, 105000 miles, LPG BRC P&D
I need help with locate all oil leak.
Oil leak occurs in the winter, now in summer is minimal.
I suspected the filter seal, but now I see that it is much higher.
I remove the oil trap.
O right side clamp was quite loose and and the hole was slightly clogged.

Is it enough to replace oil trap o-rings

: GR-372873.jpg (48.43 KiB) Viewed 2992 times

'13'- 30622066
'14' - 8653339

and tighten the clamp - '12' on engine side?
A leak may have another reason?
I see oil on dipstick at the entrance to the engine block.

Best Regards
Mikolaj

Post by **oragex** » 27 Jun 2016, 05:11

Doesn't it seem to be coming from the top of the engine? Maybe the long pcv hose going near the oil fill cap was split, or even the oil fill cap seal is gone. While the oil trap is out, don't forget to blow inside the lower block hole exposed, to check the return passage inside the oil pan is free.

Post by **FLXC90** » 27 Jun 2016, 08:18

First, clean all the oil from the front of the motor. Since you have the oil trap removed, replace hoses 12, 13, and 14 if they are cracked or mushy. Otherwise, yes just tighten the clamps.. It looks like your oil cap seal has probably been leaking/blowing, so check it to see if it is flexible, or dry and stiff. Also, you can replace the o-ring at the bottom of the dipstick tube, and the o-ring on the dipstick itself.

Post by **FLXC90** » 27 Jun 2016, 08:25

By the way, what was the condition of your charge air hose, they often get oil soaked and may leak from splits and small cracks.

mikmod · Post by **mikmod** » 28 Jun 2016, 03:57

charge air hose is OK

"o-ring at the bottom of the dipstick tube" - i have dirt under seal

"oil cap seal has probably been leaking/blowing" - yes, not look good

14 - inside I found the dirt after the removal of o-ring

oil trap has a very degraded material

I'm taking up for cleaning...