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Hi guys is it normal for a 2010 xfr (30.000km) to loose some slight amount of coolant over time.
I have only driven the car a total of around 2000 km since i got it, i have had it for over 1 year now.
I noticed a slight coolant loss around 2 cm in the reservoir since i got it, i added around 0.5 liter, to get to the cold fill level.
I haven't noticed any sludge in the oil, it doesn't overheat, there are no visible leaks, no smells, runs great, no low coolant warning.
I'm afraid thats not normal. You may want to look for a hidden coolant leak, search the forum for y-pipe and you'll find a couple posts.
I did mine a while ago: https://www.jaguarforums.com/forum/x...-c-awd-239499/
I can't seem to find the pipe you are referring to, 5.0 s/c engine has different pipes.
On the location pointed out in your thread, i have Steel pipe.
On an another car i had a chrysler, i had the same issue no evident leaks, very slight coolant loss over time it turned out to be a small hole in the radiator, coolant would evaporate so it was impossible find, i added a radiator seal. Fixed never came back years after i got rid of it.
Last edited by Carlos Saez; Apr 16, 2021 at 10:49 AM.
I can't seem to find the pipe you are referring to, 5.0 s/c engine has different pipes.
On the location pointed out in your thread, i have Steel pipe.
On an another car i had a chrysler, i had the same issue no evident leaks, very slight coolant loss over time it turned out to be a small hole in the radiator, coolant would evaporate so it was impossible find, i added a radiator seal. Fixed never came back years after i got rid of it.
The AJ133 SC (as in the XFR) had an alloy "cross over" pipe (the big one top front of the engine) from 2009 to 2012 as per your pic, then some time in 2012 the geniuses (genii?) at JLR decided to replace it with a plastic pipe. The alloy pipe never leaked or caused a problem but of course the plastic pipe is notorious for splitting along the seam and leaking like crazy, until they upgraded it some time in 2016 (after the XFR died) to a one piece seamless design.
And to rub salt into the wound the alloy and plastic pipes are not interchangeable, ie you can't fit an alloy pipe to an engine which came with the plastic pipe.
I wouldn't pour in radiator seal. More than likely you have a small crack in one of the many plastic coolant pipes
Rent a cooling system pressure tester or take it to a mechanic with one. They can quickly pressurize and track it down
Definitely not normal to lose anything - mine has never lost even the smallest amount other than when the coolant pump was failing (common issue).
When you did your water pump did it start slightly or did it go, all the way...
It's a 11 year old car it might be worth changing everything, the infamous pipe in the back of the supercharger and all the hoses, as well as the water pump.
If anyone knows all the part numbers involved, i would be very grateful.
Love the car but it's poorly designed. Before this car i had a dodge challenger srt8, that thing was superb hemi engines, are extraordinary it was just fun and enjoy.
I have been fixing things from day 1 in the jag...
The AJ133 SC (as in the XFR) had an alloy "cross over" pipe (the big one top front of the engine) from 2009 to 2012 as per your pic, then some time in 2012 the geniuses (genii?) at JLR decided to replace it with a plastic pipe. The alloy pipe never leaked or caused a problem but of course the plastic pipe is notorious for splitting along the seam and leaking like crazy, until they upgraded it some time in 2016 (after the XFR died) to a one piece seamless design.
And to rub salt into the wound the alloy and plastic pipes are not interchangeable, ie you can't fit an alloy pipe to an engine which came with the plastic pipe.
Well i guess I got lucky to have the alloy pipe, one thing less to worry about.
Yes - if you're starting to do cooling plastic repair you might as well do it all at the same time. Search on here - there is a post with all the part numbers, pieces to replace and some instructions
On my water pump it was weeping slightly - Jag dealer spotted it at annual service before I even knew about it and replaced it on warranty. I've had one other pipe start to leak more recently and replaced that. Rest all still original. Incl the alloy pipe which my 2010 has
Sounds like you've been unlucky with yours. In 8+ years of daily driving my 2010 hasn't let me down yet.
And to rub salt into the wound the alloy and plastic pipes are not interchangeable, ie you can't fit an alloy pipe to an engine which came with the plastic pipe.
I'm not sure this is correct, I think it just requires replacement of the metal Y pipe below that the top pipe fits into as well. After all, AFAIK the block design didn't change when the coolant pipes did.
Additionally, the metal "coupler" tube used in the alloy pipe setup is no longer available from JLR, meaning that if you get a leak there you either have to source replacement o-rings, or replacement of all pipes to the plastic design.
Normal coolant loss xfr
