Oil issue

[Gucci2074]

Hey guys I got a 2005 LS Tahoe 5.3, the oil was changed I’d say close to a month ago and I remember looking under it and saw a little oil droplet just where the drain plug was about a week later after I changed it. I looked under it yesterday and I see this. How is the oil making its way through what it looks like the bolts and how can I fix this. Thanks for any help! Also my oil pressure has been reading fine where it should be it’s not low or high. It’s either straight up or just a tad bit from straight up. Also this truck has 265K on it and runs good.

 

[OR VietVet]

That drop is coming from above it. May well be the rear main seal assembly for the engine at the back. Especially with that many miles. Or could be leaking above there at the back of valve cover9s), the oil sender or back of intake. Look for the highest wet spot and sometimes requires at camera inside the bell housing to see the rear seal leakage.

 

[Gucci2074]

That drop is coming from above it. May well be the rear main seal assembly for the engine at the back. Especially with that many miles. Or could be leaking above there at the back of valve cover9s), the oil sender or back of intake. Look for the highest wet spot and sometimes requires at camera inside the bell housing to see the rear seal leakage.

That drop is coming from above it. May well be the rear main seal assembly for the engine at the back. Especially with that many miles. Or could be leaking above there at the back of valve cover9s), the oil sender or back of intake. Look for the highest wet spot and sometimes requires at camera inside the bell housing to see the rear seal leakage.

Thank you, how much do you think it will cost to repair the problem? If possible and not too too difficult I plan on trying to do it on my own

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are already receiving sage advice from the knowledgeable folks on this Forum.

A cost to repair will be difficult to estimate, until you locate the source of the leak.

 

[Gucci2074]

Sure thing man here you go, the last pic is to show what it looks like with the new tint I got on it the other day. That 01 Silverado is my pops

 

[Gucci2074]

View attachment 382551View attachment 382552View attachment 382553
Sure thing man here you go, the last pic is to show what it looks like with the new tint I got on it the other day. That 01 Silverado is my pops

I love her bro I would never give her up I want to keep her forever and pass down to someone on my family like a son or grandson one day.

 

[MassHoe04]

Valve cover gaskets are easy-peasy, if that is what it turns out to be.
Rear main seal might be a little intimidating if you are a novice mechanic.

There is a Mobil synthetic oil that has seen very good results in restoring stiff rear main seals. I forget which one, but it is a synthetic for high-mileage vehicles that has conditioning agents in it that can help soften up seals.
I know there were a number of BMW and Jeep owners, who had first-hand experience in "restoring" RMS on their vehicles. Leaks stopped after a short time and never did have to tear anything apart. Only cost was the cost of a couple oil changes.

You might search up posts by Jerry Bransford on www.wranglerforum.com. He was one of the expert Jeep gurus. He was one of those, that had personal success with stopping RMS leaks with this Mobil synthetic oil on his vehicles.
Search up "RMS leak, rear main seal leak, oil".

Not saying there is a miracle cure out there, but it might be worth think about if your leak is not in the head cover gaskets above...

You may be lucky... The fact that oil drips formed by the two outer bolts, would lead me to think it might be a better chance of being valve covers rather than RMS. Clean off the oil and see if you can tell where the oil is traveling from.

 

[B-train]

My 2008 with the 6.2L looks just like that and it's the RMS. I looked from the top down with a bright light and mirror - dry. You can also get a view with a good light and mirror through the wheel wells sometimes too.

The RMS is an all day job with a lift. You have to pull the Trans and flywheel to get at it. If it's 4wd, then you get the joy of splitting the t-case from the Trans in order to get the Trans out and will need the t-case to Trans housing gasket as well.

I have 35k worth of new concrete by my shop, so it parks in the grass or gravel if it needs to sit out. A big piece of cardboard for under it in the shop at night. Total PITA, but for now that works. One day I'll get fed up and do the job. Crappy thing is the Trans was replaced by GM before I bought it and they didn't do it. Fail.......

 

[mattbta]

Cam position sensors are known to leak as well. It's up top, too.

 

[Fless]

Also, right next to the cam position sensor, the oil pressure sender can leak.