Oil Coolers and Oil changes

Dustin@Z1

On my personal Z's, I pull the oil cooler off every 3rd or 4th oil change to flush it out and refill it (or I do when I am prepping my Z for a track event...but since time has been limited here lately, track events have not been as frequent).

We recommend that the fittings to face upward simply because of concerns we all shared about oil starvation caused by the oil running out of the core.
Oil will drain out of the core whenever you turn the engine off and oil pressure is relieved. This will in turn cause a few things to occur:

1. The core will be drained each and every time
2. Excessive oil will fill up the oil pan
3. The oil pump will now be forced to prime the oil cooler and lines each and every time you start the car.
4. Air pockets will be likely (or possible) to form in the core.
5. It will be difficult, if not impossible, to achieve an accurate oil level reading.
6. When your engine is forced to prime the oil cooler and lines, it is then taking away vital oil pressure from critical engine components.

With all of this said, we believed that the additional hassell of having to periodically remove the core and flush it was far less costly and risky as opposed to flipping the core upside down (to facilitate easier oil changes).

The fittings are made of aluminum. I HIGHLY recommend using vaseline or some kind of lubricant whenever you are re-assembling AN fittings. Keep in mind, you are forcing aluminum against aluminum. In time, without some sort of lubricant, it will wear out the fittings and could create a leak later on down the road. A lubricant will prolong the life of the fittings, and make life easier.

ValidusVentus...you are correct. Our kit does NOT require you to move or alter the OEM PWS cooler. Even our upgraded Transmission cooler (soon to be released) still functions with the OEM PWS cooler and does not require it to be moved or modified. At the same time, all of our kits are mostly BOLT ON and require little to no drilling. Our upper oil cooler bracket does require drilling of the center core support brace, but it is optional (although highly recommended).

Each Setrab Core volumes...for those of you who are wondering...are as follows:

6 Series 19 Row 0.40 QTs
6 Series 25 Row 0.55 QTs
6 Series 34 Row 0.75 Qts

For the Z1 kit specifically, you are looking at roughly 0.34 QTs for the -10 AN Lines.