Sinister coolant filter leaked right out of the box.

[King06Ranch]

I did the coolant flush on my truck over the weekend. I also did the blue spring upgrade and sinister coolant filter install. The family and went to Lowes first thing yesterday morning and I come out. There was a puddle of coolant under my truck and I could see it leaking. I open the hood and sure enought the coolant filter inlet connection to the filter was leaking. To put in nicely I was very pissed off. We get home and I undo the filter setup and put some teflon tape and put everything back together so far so good. Anybody else have this problem?

[NYC F-350]

VERY common with that coolant filtration system....

[a2elvis]

Have read thru multiple threads with the same concern...

[sbarbee54]

I think in there install instruction it says use teflon. I did plumbing for a couple years and am now my own handy man. I do allot if stuff for my family and friends when needed, and I would put teflon tape on any connections.

[NYC F-350]

I think that the point is that since it comes preassembled, THEY should have addressed the issue before shipping it.
This issue has been ongoing for about a year now. You would think they would care enough to fix something like this...

[sbarbee54]

I agree, and they should say other items needed for installation. But common sense is to apply all water passing or gas holding fittings with teflon tape so they do not leak.

[juzatheman]

i had read allso that the sinister kit would most likeley leak if install it like it comes out of the box...

so after i bought one i install it like the instructions says and after 15 mile
i had a leak...

had to take the black goo off and put the tape on. after that no leaks
about 5000miles

[05lariat]

I'm on my second kit, still leaking. I'm over it.

[Evil Eye]

Originally Posted by sbarbee54

I agree, and they should say other items needed for installation. But common sense is to apply all water passing or gas holding fittings with teflon tape so they do not leak.

Teflon tape is not used to prevent leaks. It is used to allow the fittings to thread better, which in turn, prevents leaks.

[King06Ranch]

Originally Posted by NYC F-350

VERY common with that coolant filtration system....

Somebody needs to get there $hit together at that company! If people are having leaks right out of the box. Then the quality control needs to be addressed. Either do not assemble it before it leaves the factory or actually spend the few cent per product to ensure that this dosen't happen. I see that I'm not othe only one who was unhappy with it. Aren't they a sponsor on this forum? If so somebody needs hear about this.