you figure out the problem yet, sir?

 

Looks like rear main seal. You have to pull the trans out and flywheel off to get to it.

 

I agree with Kenny. Those seals get hard and brittle and are a common failure.

 

My 2002 Chevy Suburban is leaking on my drive way which has about a 10 degree incline. The truck has over 235K on it and drives like its on a cushion of air!! Last week, I look under the vehicle and found oil everywhere, so I cleaned up as much as I could and mounted my Go Pro underneath https://speedtest.vet/ https://vidmate.bid/ . I mounted the camera because I would hear a clank noise once in a while but couldn't duplicate it during the test drive. I did see where the oil is dripping from, but cannot determine its origin.

Any Ideas would definitely help. I switched to GM vehicles and love it! I have added a video.

Thanks in advance!
Rear main seal for sure

 

Rear main seal in my future as well. . . when it is convenient!

 

convenient

This is not a thing...

 

I thought my oil leak was from the rear main seal. Not worth dropping the 4L60e just to replace a $15 oil seal. I just zip tied a rag by the metal skid plate to keep oil from staining my driveway. Been this way until I changed the oil pick up tube O-ring and oil pan gasket due to a low oil pressure issue. I was amazed when the oil leak disappeared. Hahaha.
It was the oil pan gasket after all with 291k miles.

 

My 2002 Chevy Suburban is leaking on my drive way which has about a 10 degree incline. The truck has over 235K on it and drives like its on a cushion of air!! Last week, I look under the vehicle and found oil everywhere, so I cleaned up as much as I could and mounted my Go Pro underneath https://speedtest.vet/ https://vidmate.bid/ . I mounted the camera because I would hear a clank noise once in a while but couldn't duplicate it during the test drive. I did see where the oil is dripping from, but cannot determine its origin.

Any Ideas would definitely help. I switched to GM vehicles and love it! I have added a video.

Thanks in advance!

I'm a woman, I also have a lot of oil that gum up under my truck but it's not dripping. I'm gonna change the cooler lines & maybe more lines that cause the leaks. What do you call that part that shows the leaks in your video? Is it "Front Differential"? What do you call the part in the middle of the truck that connects the 2 driveshafts & it's located below the transmission pan? Thanks.

 

It's the transfer case Pat, do you think it's leaking?

 

Ray, I don't know, I saw an oil stain under the transfer case. I just realize that there is a lot of old oil gum up under the truck & it comes from "Oil cooler lines" & possibly from "power steering lines". I will try to replace these lines first & clean up the old oil that gum up as much as possible. If it leaks, how to fix the leaks at the"transfer case"?
I just watch this video yesterday on how to make your own "oil cooler lines" (so it won't leak like the traditional oil cooler lines)

. What do you think & can I do the same with "power steering lines"?

If you can tell me what are the parts that leak oil & how to fix it? Should I avoid buying a vehicle that leaks oil in the future? The last photo is the oil leak at the drive shaft in the middle of the truck which leaks onto the driveway, it just happens a couple of

months ago.

 

Here is the link on how to make your own oil cooler lines, any suggestions!!!
If I just keep the existing aluminum tubes & connections & use the gas line that fits.

 

It's very hard to tell where those leaks are from. I'd fix the lines you know are leaking and go from there.
Once the known leaks are fixed, use cardboard under the truck and see if any thing else drips onto the cardboard
Worse case, a steam cleaning will remove all the existing grease.

Are you sure you have leaking oil lines?
Not every truck has an oil cooler..
But, every truck with an auto transmission will have transmission cooler lines.

This is where the cardboard helps, the trans oil is red.

You asked if I had any suggestion on making cooler lines. Actually, it can be a big job, I have made them; but you need proper tubing benders to do a good job.

Would I suggest making power steering lines, I would say no.
I replaced 2 lines a year ago, they had very unique fittings on the ends of the lines, I don't think I could have made them.

 

Did you watch the link that I post? He just used 3/8" fuel line & used clamps to clamp it, it's so simple. The truck has been leaked for a long time (from the oil stain & gum), it never drip on the driveway. I just have 2 new leaks that drip on the driveway, one is at the "oil filter adapter" & the 2nd one is at the joint on the driveshaft in the middle section of the truck. All the old oil under the truck from the transfer case & up coming from the oil cooler lines (I'm positive). The radiator has 2 oil cooler line connections on the left & 2 transmission lines on the right.

 

I did watch the vid, backyard mechanics are inventive creatures. I've done a lot of that over the years, it almost always comes back to bite me in the ass.
GM is all about saving a few cents here and there, if it was a great idea one of their highly paid engineers would have suggested it long ago.
That's the question I always ask, if this was such a great idea, why isn't GM (or Ford) doing it?

Right off the bat, I agree with the YouTube dude, gas line will handle automotive oil.

But what he didn't ask himself was would it handle the heat from automotive engine oil?

Engine oil is hot, even hotter when your towing.
I also agree with him that the GM quick connects leak, that is a case where saving a few cents bit GM in the ass; however they are still using them so the bit doesn't have teeth, they got their goal out of them, to speed up production and to have them last 5 years.

Which brings me to your problem, the factory lines lasted for 20 years, I know you don't need an other 20 out of factory lines.

But are the lines leaking or is it the connections?
If the lines are good and the connections are leaking look for something to replace the connections.

The other option, do you use the truck for towing?
If you do, you need to fix the leaks; but if you don't, just remove the lines, most trucks don't have them anyway.

You can plug the holes in the block, or you can do a short loop using the holes and a small loop of pipe.

 

I did watch the vid, backyard mechanics are inventive creatures. I've done a lot of that over the years, it almost always comes back to bite me in the ass.
GM is all about saving a few cents here and there, if it was a great idea one of their highly paid engineers would have suggested it long ago.
That's the question I always ask, if this was such a great idea, why isn't GM (or Ford) doing it?

Right off the bat, I agree with the YouTube dude, gas line will handle automotive oil.

But what he didn't ask himself was would it handle the heat from automotive engine oil?

Engine oil is hot, even hotter when your towing.
I also agree with him that the GM quick connects leak, that is a case where saving a few cents bit GM in the ass; however they are still using them so the bit doesn't have teeth, they got their goal out of them, to speed up production and to have them last 5 years.

Which brings me to your problem, the factory lines lasted for 20 years, I know you don't need an other 20 out of factory lines.

But are the lines leaking or is it the connections?
If the lines are good and the connections are leaking look for something to replace the connections.

The other option, do you use the truck for towing?
If you do, you need to fix the leaks; but if you don't, just remove the lines, most trucks don't have them anyway.

You can plug the holes in the block, or you can do a short loop using the holes and a small loop of pipe.

The guy mentioned the rubber fuel line can handle the hot oil but your explanations make sense to me. I believe it leaks at the crimp connection from the pipe to the hose, not at the connection to the oil filter adaptor. I also could replace the plastic retaining clip at the oil filter adaptor connection. I usually don't tow but you never know, I might haul stuff sometime. I guess it's better to use the original oil cooler lines. After I fix all these, I might consider selling the truck. I'm a woman & don't want to mess with the repair too much that's why I try to buy a low mileage vehicle. I already spent enough money on this truck, now I can see a lot of expense coming because most or all are still original parts & the previous owner did not really take care of the truck. I guess he doesn't know about mechanics too. Since it's old, I would not get that much money that's why I try to minimize the expenses on the repair. I need to fix oil leaks on the oil filter adaptor, oil cooler lines, replace the seal on the driveshaft & find out where is the leak causes the oil in the coolant. It's just the cramped space that makes it's hard to remove the old parts & replace them with new ones.