Oil on back glass

bubba · Post by **bubba** » 14 Feb 2006, 15:36

Hi, I am a new Vovlo owner. I am trying to figure out why a thin film of oil keepd getting on the back glass of my96 850 turbo station wagon. Any help would be great.

Tsquared · Post by **Tsquared** » 14 Feb 2006, 17:59

Is it engine oil or transmission oil?

Post by **MadeInJapan** » 14 Feb 2006, 18:21

I'm thinking you're burning lean and getting exhaust vapors to condense and cling to your window. How does your exhaust opening look?

Post by **pfeener** » 14 Feb 2006, 18:27

Are you using a lot of engine oil? Sometimes rear main seals leak so much oil that it runs under the car and blows up on the rear window of wagons. Check the underside of the car; if it's wet with engine oil, your RMS is most likely in need of replacement.

saltydog · Post by **saltydog** » 15 Feb 2006, 05:21

any blue smoke out the tailpipe? I blew a turbo seal on my 245, & I had the window film appearing for about 2 months before it REALLY let go. Definately watch your oil consumption.

White850Turbo · Post by **White850Turbo** » 15 Feb 2006, 06:47

Could also be a major turbo oil return line leak.

bubba · Post by **bubba** » 15 Feb 2006, 15:42

The car is using about a quart of oil a week. I will try to get under it this weekend. I travel every week and bought this car because I thought it would be a good family car (wife plus 4 kids). Thanks to all for the help.

Post by **pfeener** » 15 Feb 2006, 18:10

Things to look for as you try to locate your leak. From easiest to hardest to repair.
1. Oil filler cap gasket and oil dipstick "O" ring. The oil filler cap gasket needs to be replaced every 20K miles or so or it will develop a major leak. Take off the spark plug cover on the top of the engine and if the top of the engine is covered with oil, replace the filler gasket.
2. Turbo oil return line on the back side of the engine. (see the repair section of this forum for more information)
3. Camshaft seals leaking
4. Rear main seal leak, a real pain in the butt. The engine & transmission need to come out to replace. Will be leaking on the underside where the engine and transmission are joined together.

Other possibles could be a leaking oil filter or drain plug.

Probably the whole underside will be covered and you'll need to clean it up real good before you will be able to determine the source of the leak.