Coolant Tank / Cap Question

[M32H32IS]

My original expansion tank developed a leak so I picked up a replacement off Rock Auto that included a cap.

Odd that the cap is rated 110kpa instead of 200 like the original. Should I swap caps?

 

[ktm525]

I wonder if the tank can take that pressure? I would be getting a tank that runs (or can handle) the stock pressure required which is? 110 KPa is pretty much atmosphere.

 

[powershift]

.

 

[M32H32IS]

Been running original cap with 0 issues. Interesting enough, the system is no longer over pressurized at operating temp. No swollen hoses. No pressure the next morning.

I’m a bit concerned lol. It’s acting normal.

 

[itsaguything]

meaning a leak??

 

[M32H32IS]

It wasn’t leaking. Til it did. Threads failed on the aftermarket tank. Picking up a LR tank today - that one was terrible from a quality perspective. Couldn’t hold designated pressure hence the 110kpa cap.

 

[itsaguything]

It is fairly common; you get what you pay for. How long did the original reservoir last you…

Glad you’ve sorted it out.

 

[M32H32IS]

original made 192k miles. Cheapest aftermarket on Rock Auto lasted about 200 miles. Well, it may last 192k if I run their cap but no thanks. I’d like my coolant to be operating at the correct pressure.

 

[greiswig]

original made 192k miles. Cheapest aftermarket on Rock Auto lasted about 200 miles. Well, it may last 192k if I run their cap but no thanks. I’d like my coolant to be operating at the correct pressure.

Maybe they were trying to make the cap a pressure fuse, and keep you from blowing out the plastic coolant pipes.