2005 Jaguar S-type V6 3.0

I am about to swap out a bad expansion tank (coolant) and it seems that that after refilling the cooling system, that the bleeding routine needs a rocket scientist. Ok, I am exagerating a bit. But I am confused. I wish there was a video somewhere.

I read some of the other post pertaining to this and it seems that there are two different bleed valves. One is directly on the expansion tank and the other is on the engine somewhere by the throttle body.

I am sorry, I am confused about the process and was wondering if someone can explain it like the dummy I feel like I am.
I recently did my ford truck, an 05, and all that was required was to turn the heater on full blast and run the engine and fill the coolant reservoir if the level went down.

I am also lost to where the drain plug is to drain the system. Some say it is on the rear right bottom of the radiator, but is that rear right if I was sitting in the car or standing in front of the car?

 

On your 2005 there is only one bleed screw which is the one on top the expansion tank (the one you see).

I cannot recall a radiator petcock, sorry its been awhile. You do not have to drain entire system to replace expansion tank. I used a small diameter, 3' long hose and syphoned out the tank.

Be careful of the lower tube/hose going into the expansion tank. There is a nickel sized star shaped retainer spring that will fly if you are not ready for it to "pop".

Replace tank, hook up 2 lines and the electric connection. Start vehicle, heat on high allow time for pressure to build loosen purge screw (bleed screw) enough to allow bubbles and a bit of coolant out, close and repeat until no more bubbles.

 

Ok, if there is only one bleed valve atop of the expansion tank..... good. Things are looking up.

My refill worries are such.... the existing coolant in my Jag looks to be red or orange. I do not trust the sales people at the local auto shops. (I have Pepboys, ORielly, and Autozone autoparts locally)
As far as coolant, I am familar with the Zerex G-05 which is gold color, will this mix with my existing coolant? If not, which after market anti freeze/coolant should I buy that I can add to my existing coolant? If I can not find a compatable antifreeze to mix with my existing coolant, I will be forced to drain the system...... yuck.

I know your going to tell me to just add back the coolant that I syphoned out the tank, but unfortunalty I already syphoned out the expansion tank and disposed of it.

 

Zerex G-O5 is ok to use. Whatever you do, do not use any green stuff including the green antifreeze that mixes with both color antifreezes.

 

joycesjag... you've been very patient and friendly. I would have thought that I would have been flamed by now with my elementry questions...

Please allow me to post just one more follow up question.

I've read that my 2005 S-type V6 3.0 Jag is compatable with Dex-cool anti freeze. If this statement is correct, then which should I buy to top off my reservoir, the G-05 that you stated is ok to use or the Dex-cool?
Remember that my existing coolant looks to be orange or redish.... what ever it is, the Jag dealership put it in.

 

No worries.....

I personally use Dex-cool in my wife's S Type. I have a GM vehicle as my daily driver so I can use it in either or vehicles.

Loads of great information to read in the "How To's" here at the top of the board. A lot have easy to follow pics and or videos.

Again be careful of the star retainer clip on the bottom hose and you'll be fine.

 

I will be careful with the retainer clip.
I hear good things about, both, dex-cool and G-05. However my question is about "mixing" my existing coolant with new.
As you and I stated, I am not empting the entire cooling system, just the expansion/reservoir portion before replacing my expansion tank for a new one. So what ever I add back into the expansion tank needs to be compatable with what is already in the system.

Maybe I will start a completely new thread about this...

 

I am pretty sure that our S Type had OEM antifreeze when we purchased it previously enjoyed some 6 years ago. I have over our ownership have added Dex-cool to OEM before switching to Dex-cool a few years back.

No one can tell you for sure what is in your S Types cooling system. If you feel more comfortable in draining and refilling system then do it. It may not have had a full flush anyways that should be done around every five years.

 

I use DEX Cool in both my Jaguars... +1 on not using/mixing any coolant w/ green coolant...

 

Do you consider Zerez G-05 a green coolant. Looks gold to me

 

I replaced my expansion tank last year and replaced the fluid with G05. I did a complete flush 3 times with plain water then filled 50/50 mix with G05. You're right it is yellow in color.

 

like I said I use DEX Cool, which meets Jaguar's requirements. I have zero experience w/ G-05

 

For your 2005 model the factory coolant is Dex-Cool.

That's all I use in my 2005.
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Rick-

The top of my bleed screw got shorn off somehow. I am going to replace is with an alloy one.

My question to you is do I keep the car runnning and the heat on high throughout the repeat process? I am assuming so, but as I have not done this before I want to be sure. From your experience can you give an approximation of haow many times one has to repeat the process?

The spot where the bleed screw goes was covered with electirican's tape for about a week while I waited on the part.

Thanks for your consideration. I have a 2005 XJ8L.

FH

 

Way to resurrect a 6 year old thread

 

So, are you saying I should start a new thread? I thought I was supposed to search the threads, which I did, and it only got me so far.

If I violated some protocol, apologies. Totally unintentional. Just need some help. If you can help me, I'd appreciate it.

Thanks.

FH

 

It's not a big deal...lol, but if you read the comments in this particular thread it's not that hard to replace the expansion tank. Basically siphon out the coolant in the tank until empty, or if your coolant is more than 2 years old - drain the entire system.

Then disconnect both hoses, take out the bolts holding the tank.

Installation is the opposite.

Fill up the expansion tank. Start car w/ cap on with heater on high. When car up to temp open the bleed valve or...

What I do is shut off car, let it cool for an hour then open cap (be careful) and refill tank to max.

Might need to do it a few times over the course of a few days.

 

Finzi abonno has you covered with the above info. You may want to consider replacing the expansion tank. They are a known issue with our beloved S Types.

 

Yes if the tank has not been replaced I would change it now. It's just a wear item and almost every S-Type will need it replaced at some time. No point in getting stranded or overheating your engine!

Just be careful with that lower hose wire retainer setup! It must be on correctly or it will blow off! I have launched that little wire part repeatedly and it's a bitch to find. Check it several times as it's easy to have the bottom hose on part way and you can't tell because everything is so tight in that area. Plus it's not available separately so be SURE and save the old one so you have a spare when installing the new tank.
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