Leaking oil cooler fittings on Z1 kit

s2krazyyy

For those of you wondering if the thread sealant works. The permatex stuff that ChaseZ recommended to me worked great and now I dont have any oil seeping through the fittings. But I did buy new lines, fittings and a new gasket for the sandwich plate just to be safe. To be fair to Z1 I bought this oil cooler used so thats my fault. I called Z1 and they said they updated their lines because of this reason.

RanRich

How much did that cost you since you didn't buy the cooler direct? I am buying used as well and am concerned I will run into this issue.

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s2krazyyy

If I were to do it over again I would just buy it new. I got my oil cooler for 350 then spent about 160 on new lines/fittings. Im still coming in under what a 25 row would cost with setrab/thermostat but, I would have gladly paid the extra $60-70 to have an oil cooler that was just one and done. When you are buying these things new you have to consider that there are rubber gaskets everywhere so when you unscrew it the gasket no longer seals correctly, add into the high oil pressures these things see and its easy to see why its leaking. If you are going used I recommend you buy new gaskets for everything including the sandwich plate.

RanRich

Definitely not the answer I was looking for. I'm getting the setrab/thermostat 25 row with sheathed lines and ~3K on it for about 100 off retail.

I guess my remaining question is how many of these issues come from those who installed themselves as opposed to letting a good shop take care of it or didn't tighten those fittings. Guess we'll find out.

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Rusty

Mine has been on the Z for 6 yrs now. Still tight.

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Jhill

I just checked mine about 2 weeks ago doing oil change. 20k mi since install and not a drop.

LateShow24

This is my 2nd oil cooler from z1 and love the quality and customer service

LateShow24

Z1 fo life lol

Wonka2581

Are you sure it's leaking? Kinda looks like oil that dropped on the lines when the oil filter was changed.

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Wonka2581

Ok I would contact z1 and see what they say.

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Jayhovah

It will definitely be faster to call Z1. I have gotten good customer service from them, as recently as last week when they let me exchange some differential bushings that I had already installed.

Mocal sandwich plates usually come with 1/2" BSP female ports. It looks from your pictures that an AN male fitting was installed into that port, and then an AN hose end was assembled onto the hose. I am guessing you could measure that fitting and hose and compare to the AN standard to figure out which sizes you need... Or just call Z1. They can probably give you all the information in a matter of minutes and may even be able to help you resolve the leak since it looks like your hose end has some kind of defect.

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