Mystery Oil Leak

[Geotrash]

Is that a 10mm?

Yup. I used a ratcheting combination wrench from below.

 

[89Suburban]

Yup. I used a ratcheting combination wrench from below.

Oooo I got a set of those. This is on my to do list.

 

[89Suburban]

As mentioned previously it may be the oil cooler block off gasket which is directly above the oil filter (oil filter is the object on top of the photo). You can see mine had a slight leak...

View attachment 264792

This is what the gasket looks like...
View attachment 264793

But it might be something else...just throwing ideas at ya!

Reminds me...I have to check to see if the new FelPro gasket stopped the leak.

Got a part number for that gasket? I can't seem to find one that looks like that.

 

[Jason in DLH]

Here’s a comparable Fel Pro. The one in the picture was the OEM. I don’t think I ever found that style either.

https://www.amazon.com/gp/aw/d/B00HJQWDLC?psc=1&ref=ppx_pop_mob_b_asin_title

 

[Jason in DLH]

For 2007

 

[89Suburban]

Here’s a comparable Fel Pro. The one in the picture was the OEM. I don’t think I ever found that style either.

https://www.amazon.com/gp/aw/d/B00HJQWDLC?psc=1&ref=ppx_pop_mob_b_asin_title

For 2007

Ok so it is just a flat plain gasket then it looks like.

 

[Jason in DLH]

Pretty much.

 

[Jason in DLH]

I believe there was a slight ridge near the openings with the FelPro, but not as significant as the OEM.

 

[Geotrash]

Ok so it is just a flat plain gasket then it looks like.

That's true if you only have a block-off plate and no oil cooler lines. If you have oil cooler lines going to that spot then your gasket will have 2 smaller holes instead of one big one.

 

[Aeterna]

Who ever fixed your previous leaks did a great job.

thanks yeah they did, granted I paid good money for it. Just leaks, I had the front timing cover, oil pan, rear main, oil cooler plate, front axles and pinion seals, and the steering rack done. Ive had a ton of other work done as well. To my knowledge motor and tranny are original, so it was a bit of a gamble to invest the money but it still cheaper than buying another vehicle. I love this thing and so does my wife.