I want to change the antifreeze in my 2011 XKR. Book says to use antifreeze that meets WSS MB97B44 which is the same Ford Motorcraft "Orange" stuff I have. Is it worth flushing out the system and going with the later Jaguar spec Purple antifreeze ?. Never been a fan of Dex Cool after it turned to a jelly in my GM truck..

 

Since it all should be flushed/changed fairly often (5 years?), may as well do the whole flush now. It's cheap insurance to get rid of all the nasties and get fresh additives and such inside again.
"Jaguar Spec" means a company paid Jaguar to be listed. Get any matching Good Stuff and you're fine.

 

Off topic I know: Turned to jelly?? Really?

Look forward to someone's suggestions here. FWIW, changed the fluid last fall. Jaguar suggested that listed in our manuals. And not changing the fluid to the new spec.
FWIW, Ford says this: https://parts.ford.com/content/dam/f...s_Brochure.pdf

 

There are other threads around here about coolant for the AJ133 engine (and the AJ126 as well) and as far as I can tell pretty much any and every orange/pink/red coolant will be perfectly OK. Some of the green ones might be OK but many of them are not, so just steer clear of the green and go for the orange/pink/red instead.
I have used two different Oz brands of "pink" coolant (Nulon and Penrite) in my XFR and F-Type and zero problems with either.

 

Thanks. More of a brown sludge. If you google DexCool and sludge you will see endless complaints. I had to replace the radiator and water pump, I went to Zerex G07 and no issues since.
I'll use the Ford Motorcraft Orange stuff.

 

Google doesn't know what G07 is, but finds a ton of G05.

 

Zerex G30 (purple) seems to meet the spec in my Owners Manual - 2010 XK Portfolio - but had the dickens finding it locally. Had to mail away to O'Reilly and have (3) jugs ready to go. Of course, flush out whatever previous owner had in there.

 

I’ve been using DexCool for almost 20 years with no issues. The GM debacle was not a DexCool issue, it was an issue with materials GM used in their cooling circuit which they later changed. JLR vehicles are engineered to use OAT coolant exclusively and deviation could cause problems with the materials used in the cooling circuit.

 

I don't see many, if any complaints about the OAT coolant in the X150, but there are several in the X350 section with the same problems experienced IN M vehicles that led to those lawsuits.

Most of the issues in the X350 were heater core related. Example
https://www.jaguarforums.com/forum/x...-vents-108522/

This could be a heater core design issue as well.

I know nothing of the "purple" spec coolant but haven't had any issues with the OATS (Dexcool) in any of my cars. Full flush and replace every 5 years and I'm good.

 

G05 .... Same stuff I use in my Ford

 

I changed my transmission fluid, ediff fluid, brake fluid, engine oil and coolant over the winter. All purchased from Jaguar. My car was still under CPO warranty at the time with 13K miles and my objective was to put the car in as new condition as possible. Thirteen liters of Jaguar branded transmission fluid (or eighteen, I forget) was expensive to buy from the dealer. IMO the branded transmission fluid is identical to ZF fluid 6. I used the Jaguar branded coolant and will use it again because it is relatively inexpensive overall considering you only change it every four or so years and you don't have to worry about mixing fluids.

 

Jelly...maybe not, however I have experienced similar issues with Dex cool. 2002 blazer abused, until I got it. It was a mess...it had OEM coolant in it.
and the coolant was the viscosity of straight 40wt. Plugged up rad bla..bla.

 

Check "Evans Waterless Coolant", that was developed in part by John Fitch. Check John Fitch on Wikipedia. He was one of the most ethical racers and engineers ever to live. My feeling is that if Fitch developed a product it is the real deal.
Whatever, I installed it several years ago on my '13 XK. One of the advantages of Evans is the very high boiling point, which makes coolant pressure unnecessary. I run with the coolant reservoir cap loose. No pressure means much less strain on water pump seals and longer water pump life. Still running the oem original water pump.

 

Mixing 2 different non-compatible coolant types will also cause this, such as traditional green anti-freeze and OAT coolant.

 

Here in the UK Halfords (pink) Premium Coolant meets WSS MB97B44-D spec, better still the have a chain of garages which (when they reopen) will do a flush (which I had to insist on) and refill of coolant for £40! At that price not worth getting my hands dirty

And yes I've used them before for a coolant, brake and PAS fluid change on my Audi for £70 inc, only error they made was not fitting the undertray back properly but soon rectified

 

I use Evans Waterless in my Drag car, mostly because antifreeze isn't allowed at the track. Another reason is because of the negligible pressures. I personally think it works GREAT in that application. Sure, the thermal dissipation is lower than that of water, but that's STRAIGHT water. Add nearly any coolant/anti-freeze and both have close to identical properties. It's the Low Pressure that helps out with Evans, and here's why..... You get a leak at your water pump seal.... with 218F conventional coolant, fifty percent of your fluid goes out that leak within three miles. With Evans, you'll get a couple drips per day.
Blow a hose? Nah, won't happen.
Blow a freeze plug? Unheard of using Evans.
Great stuff, that Evans.

 

I have considered Evans for my XKR, if I'm to understand the process, it goes like this:

1) Drain and ethically dispose of your old fluid
2) flush through with tap water
3) Leave to drain/dry for 24hrs in warm temps
4) Remove remaining water with air compressor & defuser
5) Reconnect hoses
6) Fill with Evans prep fluid and run engine for 10 mins
7) Drain prep fluid through a filter for reuse on another car
8) Fill with your chosen Evans waterless coolant.

Two questions then:

A) where is the best place to drain from?
B) What's the total coolant capacity of a 5.0 XKR?

Your advice is muchly appreciated

 

These are the 5.0 specs

 

13.8l is going to be expensive!

Will start saving my pennies

Drain points I'll assume one's on the bottom of the radiator and the other would be at the expension tank?

 

There is a drain petcock for the radiator with an access hole in the under-tray. I think topside you have to drain the supercharger separately.