You should be fine; just make sure you repair any pinhole leaks. The system is always pressurized, so a leak makes the pump overwork to maintain the correct pressure. That's what I assumed killed my pump prematurely. Looking at the lines for any moisture or signs of fuel or a leakdown test can help determine a leak in the system. I do the test twice a year as a precaution. And as far as the cooler lines, I would not shy away from ACDelco brands as a second choice.

 

Is there anything I should watch out for or ask the dealer to do with regards to the oil coolant line job? For instance, are there any gaskets/O-rings/etc I should make sure they change as well? Anything I should do when inspecting their completed work? Thanks!

 

Not really; they should know what to do. When I bought mine, they did come with new O-rings and gaskets. That's a given. Why would you risk using the old ones? I would just keep and eye for any oil leaks after install and oil level for first few weeks. I did have them do a oil change using my own purchased quarts of Mobil 1 HM with a ACdelco filter and new felpro gasket for oil plug. Nothing your mechanic can't handle.

 

I would have them also replace the gasket and o-ring between the oil-line to engine block adapter and the block.

 

Can you please illustrate what you mean? Do you mean the fist-sized chunk of metal that the oil filter screws into? And then do you mean the gasket between the fist-sized thing that the oil filter screws into and the engine?

 

Look at this picture (not the actual part only as example) do you see the O-ring seals? Those should come with your new lines. Does not have anything to do with the oil filter, but the lines do connect to the oil filter adapter (fist-sizsed thing), So to clarify, your lines should include O-ring gaskets that go between the oil filter adapter and the line itself.

 

The Engine Oil Cooler Lines assembly part 15194577 is 10, 11, 12, 15​​​​​​​ in the below diagram on a 2004 Chevy Blazer RWD 4 Door LS trim. Are you saying to replace anything else?

 

My oil lines are fixed!! The part from the Chevy dealer came in a plastic bag with a general motors sticker having a hologram on it. There was no paper tag as in the photo above, but they assured me it was a legit part. The origin was Canadian with "imported" parts it said. My vehicle now stinks less and I think I can tell that it runs better. More specifically I think my lungs no longer burn when I drive the car. I kept my old oil lines and I am thinking of trying to make them into racing-grade lines.

 

That's good to hear; it should provide extended life to your engine oil cooling. If you do post the results, I would be interested in such an upgrade.

 

If you know how to do a NASA-grade fitting of the hard lines to an AN connector I would be very interested. If this involves cutting, I also would want to know how to make the line clean enough for use with the engine oil, that's a little scary over 100k+ miles of intended usage, I would hate for microscopic debris to break off and harm the engine. There would also be the question of a seal which can last for that long or longer,... and I am vague whether there are o-rings/gaskets in need of replacement on the radiator or oil filter sides.