Hi All,

My x100 was sitting for the better half of this year, as it is stored away from my normal residence.

I did my normal fluid level checks before starting the engine and taking it for a drive. Everything seemed to be full or mostly full.

I pulled the car out and noticed an orange fluid (about three small drips) which I assume is the Jaguar long life orange coolant. I went for a quick drive around the block and watched the temp gauge (I have the real gauge mod) and the temperature gauge was showing it was holding temp (215F). I let the car cool for a few hours and pulled the coolant cap once again and it looked like it was at the same level (maybe very slightly low).

How full should you overflow coolant tank be? I noticed this is much smaller on my X100 compared to the later Jaguar products with a similar engine (4.2L).
Any common places to look to see if it leaking?
I did have a new updated water pump and new antifreeze put in last summer, not sure if it could be residual coolant.

Thanks for your help!!

 

The "proper" answer is to get a cooling system testing kit and build some pressure through an adapter on the overflow tank. I believe Harbor Freight has an adapter with perfect fit in their kit.

Barring that, the 2 Norma connections to the famous octopus hose are "usual suspects". They can drip on the hot converters, so look for that white residue. The 2 heater hoses, aka valley hoses are usually neglected for lack of access. The overflow tank itself develops cracks at the seam over time. There is an atmospheric recovery tank in the wheel well with its own piping that can sometimes leak as well. Also, double check old repairs as sometimes "incorrect" clamps can cause issues (cheap worm clamps vs. proper spring clamps). Of course, on an aging car, anything can go wrong...