Go Back  Jaguar Forums - Jaguar Enthusiasts Forum > Jaguar Models ( Modern ) > XK8 / XKR ( X100 )
Reload this Page >

Major oil leak, mysteriously fine next moring-???

XK8 / XKR ( X100 ) 1996 - 2006

Major oil leak, mysteriously fine next moring-???

Old 05-30-2019, 11:32 PM
Letmyhairfly's Avatar
Thread Starter
Join Date: Apr 2014
Location: Athens, Ga
Posts: 37
Received 16 Likes on 6 Posts
Default Major oil leak, mysteriously fine next moring-???

I took my 98 XK8 down to our place on the Ga. coast, about a 5 hour run. I try to stay off interstates, as the ride through South Ga is pleasant. About an hour from Jekyll Island, and 10 miles from Jesup (middle of nowhere)
my low oil pressure light comes on. I immediately pull over to a church, in the dark. No reading on dip stick. As a knowledgeable Jag owner, I keep 5-6 quarts of oil in the boot at all times. Takes 3 quarts. I am very aware of my minor Rear Main seal leak, which is typically about a quart every other fill up, so this baffles me. I proceed into sleepy Jesup and as I pull into service station, light comes on again. I look under and there is a 1/8" steam of oil running down off bell housing. I put another 3 quarts in and just barely reads on stick. I back away to check further and a line of oil on ground. As its 11 pm, I check into a hotel in town about 1 mile away. The next morning I'm fully expecting a huge oil puddle under the car, but to my great surprise, NOTHING! I top her off and find a mechanic to put up on lift. We can find no major leaks, but entire under-body is evidence to contrary of previous nights leaking. I drive in 15 minute spurts around the shop continuously checking the oil status. After an hour still no leaking. At this point I continue on to the Condo, drive all week, and then return home and never again did this major leak occur nor since in my few short drives.
Anyone have any clue what could have happened after 4 hours of driving, and then fixed itself overnight??
Old 05-31-2019, 05:30 AM
DavidYau's Avatar
Senior Member
Join Date: Jan 2019
Location: Bahrain
Posts: 580
Received 157 Likes on 116 Posts
Default Maybe rear main seal worked loose but could be Rear oil gallery plugs

You may have gotten lucky. Obviously you had a major leak, where you know youíve got a rear main seal leak. This could have become dislodged, leaked, and then worked back into shape.

Hope itís not nothing new like rear gallery plugs.

Maybe itís a sign for you to get the engine and tranny out and do the job(s)
The following users liked this post:
WhiteHat (05-31-2019)
Old 05-31-2019, 05:52 AM
Veteran Member
Join Date: Dec 2010
Location: Douglasville Ga.
Posts: 7,608
Received 2,099 Likes on 1,795 Posts

Very strange, but I agree the only choice is to drop the transmission replace the main seal and check the plug.
Old 05-31-2019, 09:11 AM
Senior Member
Join Date: Aug 2015
Location: Maryland
Posts: 409
Received 97 Likes on 69 Posts

First, I'd go for checking the oil filter and oil cooler lines if applicable. Be a shame to drop the transmission to fix the seal and find the filter was loose.
The following users liked this post:
DavidYau (05-31-2019)
Old 06-01-2019, 12:07 AM
DavidYau's Avatar
Senior Member
Join Date: Jan 2019
Location: Bahrain
Posts: 580
Received 157 Likes on 116 Posts
Default Oil filter check

+1 to Truck Graphics suggestion on checking the oil filter.

One of the common faults on home DIY oil changes is the oil filter.

Sometimes when you remove it, the old sealing ring stays stuck in the car. If you donít notice it, then youíre screwing the new filter in with both rings in place so itíll leak.
The following users liked this post:
Truck Graphics (06-06-2019)
Related Topics
Thread Starter
Last Post
Tom Mcquiggan
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
12-29-2016 11:39 PM
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
05-07-2016 03:52 PM
Jaguar Forums Editor
Jaguar Press release
06-24-2015 11:38 AM
General Tech Help
04-18-2013 07:59 PM
XJ XJ6 / XJR6 ( X300 )
05-05-2011 03:58 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools
Search this Thread
Quick Reply: Major oil leak, mysteriously fine next moring-???

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: