So for a long time I've had a coolant cap that at first looks easy to screw off, then it just keeps turning and nothing happens.

I thought there must be some sort of safety feature so I consulted the manual which told me nothing. I then tried pulling, pushing whilst twisting, tired to lever it with a screw driver gently but the damn thing just won't pop off. Now my coolant is below minimum and it's summer here so I would really like to top it up with some fresh coolant.

Any ideas?

 

I'm pretty sure you have to press down and then twist it. I have an x type also.

 

Nope that's definitely not it. I think the very top of the coolant bottle might actually be treated. Looks like a replacement coolant bottle is needed

 

lancervi50
The cap--unscrew it till it spins free then pull up hard almost like prying it off, then when you put it back on you have to hit it with palm to get it to start also.

 

If it is like the one on the XJ, the cap has an o-ring seal on the barrel extending through the opening and the o-ring is pretty tight. So, follow the advice above.

On re-install, a light film of lubricant on the seal can be helpful.

 

That's exactly what it is. The first time i opened it..just the top od the cap came off and I had to pry the remaining piece..I then forced the top of cap that screws on to the expansion cup to the piece I had to pry off and it was whole again..

To screw it back on you literally have to hit it with your palm so that it grabs on to the screw threads and voila..its back on..

My concern though is..if we are using these unsual methods to remove nd replace the cap..does it effect the pressure specs? ?..perhaps someone has had some experience

 

Billbjork, plums and anonymousdroid that has to be it! I haven't tried it yet but yes I can unscrew the cap all the way to basically what looks to be the top but then it just doesn't budge from there. I guess more brute force is require to take it that extra further till it comes off. I shall try shortly!

Thanks