oil leak

  1. 29tomt

    Blue Devil Rear Main Seal Stop Leak

    I had previously posted that I had a leaking rear main seal on my 2003 Tahoe 5.3 with 223K miles. It had started out a small drip drip but began to show up on the dip stick. Vehicle has never budged off of full on the stick. Having last year had the oil pan gasket replaced along with the oil...
  2. H

    What engine oil?

    I have a 2005 Yukon XL with the 5.3. I have an oil leak problem, after 24 hours of sitting it will leave 2 small puddles of oil about 1.5 inch across, and one about 4 inches across. I added AT-205 to my oil a few weeks ago, and it completely resealed them and I lost no oil at all. I noticed that...
  3. O

    Oil Leak on a 98 Yukon

    Hello! I have a 1998 GMC Yukon, which just had a oil pan gasket, and new oil cooler lines replaced. But yet, the drip still persists. After spending 15 mins under the truck, it looks like the pan has oil on it, but where the transmission and oil pan meet, I can see this drip. Now my first...
  4. davidavidd

    Can anyone help me find out what happened here?

    Hi TY forum members happy new year from Colombia, long story below: I have a 2007 Tahoe, stock 5.3 engine (I've only added an oil catch can and transmission radiator), 180,000 miles with all the maintenance routines. Four days ago I did a little 300 mile round trip (mixed road between flat and...
  5. davidavidd

    Serious Engine Oil Leak! Tahoe / 5.3 / 2007

    Hello TY Forum, while I wait for the parts to repair my transmission I decided to take advantage of my free time looking for a big oil leak in my Tahoe (2WD - street use only). I share this video with you, waiting for your comments on it. The leak is massive (1 qt in two days!). Tomorrow with...

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