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DiscoWeb Bulletin Board » Message Archives » 2003 Archives - Discovery Technical » Archive through September 08, 2003 » WHY DO 3.9s oil pans leak upward,as well as downward. « Previous Next »

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Gregory M Lichtenson (Gml)
New Member
Username: Gml

Post Number: 12
Registered: 09-2003
Posted on Saturday, September 06, 2003 - 10:36 am:   Edit Post Delete Post Print Post

I have noticed that everytime my oil pan is leaking I get little oil specs on the rear bumper.This has been true
3 out of 4 times.also why do oil pan leaks seem to leak upwards at times downward at others.Can anyone answer
these two questions for me RSVP RSVP....I do realize
when I am driving it leaks backwards etc,but how does it
leak upwards signed curious..777NYCEND
 

Ian Bentley (Ibentley)
New Member
Username: Ibentley

Post Number: 22
Registered: 06-2003
Posted on Saturday, September 06, 2003 - 11:39 am:   Edit Post Delete Post Print Post

When you're driving, the air flow past the vehicle creates an area of low pressure inside and under it. This is why they tell you never to drive with a rear window only open, as the low pressure will pull the exhaust gases into the car. Race cars use 'ground effect' stuff to use this to pull the car down into the track.

When a rover's automatic corrosion protection system is activated, the low pressure pulls the oil upwards, as well as back from the air flow. Don't forget, also, that anything that hits the spinning driveshafts goes everywhere.

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