Coolant Resevoir Cap

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Apr 24, 2026 | 01:20 PM

Charlie49

Thread Starter

4th Gear

Joined: Apr 2026

Posts: 4

Likes: 1

Coolant Resevoir Cap

I turn the cap counter clockwise, hear a click, keeps turning easily and then gets tight, feeling like I am tightening it rather than try to remove it.

Apr 24, 2026 | 01:26 PM

merlinj79

Recovery Vehicle

Joined: Jul 2012

Posts: 834

Likes: 354

From: San Diego

That's normal. I was using channel locks to get it off at one point.

I eventually replaced the coolant reservoir, now the (new) cap comes off more easily for whatever reason.

Apr 24, 2026 | 02:35 PM

LR2driver

Recovery Vehicle

Joined: Feb 2013

Posts: 849

Likes: 230

Suggest you keep a spare cap on hand. Mine broke when I removed it, and if I didn't have a handy replacement I would not have been able to use the car for several days waiting for delivery.

Apr 25, 2026 | 11:41 AM

merlinj79

Recovery Vehicle

Joined: Jul 2012

Posts: 834

Likes: 354

From: San Diego

I also lubed the threads with silicone grease at one point, that seemed to help some.

Apr 25, 2026 | 11:43 AM

merlinj79

Recovery Vehicle

Joined: Jul 2012

Posts: 834

Likes: 354

From: San Diego

Quote:

Originally Posted by LR2driver

Suggest you keep a spare cap on hand. Mine broke when I removed it, and if I didn't have a handy replacement I would not have been able to use the car for several days waiting for delivery.

Yes unlike many cars, the reservoir is fully pressurized... the cap must be fully on to drive.