Can you get your hand under the bottle and check for coolant from the drain that runs over and to the right?

yep thats perfect but wrong :D took the cap off when it was cold, no pressure (good) took the cap off when it was hot, no pressure (bad) topped it up when it was cold, no pressure. messed with the cap and put it back on when it was still cold, no...

Yes but.... Any signs of leaking? 🫣

Let me see If I can explain myself thinking. When you top it up/fill it you do so with no pressure in the system 👍. When you put the cap on you are not trapping any pressure👍. Now if you put the cap on with it warm/hot, cos you were running it...

Has to depend on many things. The V8 often sounds like it is revving hard when it isn't. You'd run a 4 pot at the same revs for instance. It is very easy to over gear a vehicle. And how fast do you want to go? I had a 200Tdi S3 88, I did put...

Fair enough lad👍

Sat on a rebuilt lt230 1:12 the brakes are up to the task I’ve fitted anti roll bars and new props I’ll deal with the diffs if they fail but I think they should be up to the job. I’m not planning any off road work A muddy field will be the worst...

I think you've misread somewhere lol. Yesterday.. or was it day before.. engine war fully hot with no system pressure.. after messing with the cap there was "some" pressure, but not as much as i would have expected for a hot engine. So i think...

Understood but if there are no traces of leaks then it ain't? 🤔😛

If it's just been driven there will be some pressure my mate. If it's cold there shouldn't be. The more modern systems are more efficient as these engines run even hotter for the emissions so they had to up the game for the cooling systems. 👍

Just be mindful of the extra forces on the drive train due to the programming 👍

It was just loose on the floor tbf! The real one is cable operated and needs to be taken off

It’s already mapped

Remap for even more unnecessary power.

I wouldn't worry about the sniff test unless it's caused a gasket failure 🤔

From that description, it's knackered.

No, I add thermostatic control, easy and simple to do. If you want details of my electric cooling mod, PM me with an email address.

Viscous fan failure is common so I have dispensed with it and use the aircon fans for cooling.

A good strong lamp and like kda says, start looking into the V or use a long cable or similar and poke about and look for residue, maybe pink or green crystals👍

Newspaper test - roll up a newspaper and slowly insert into the viscous fan. When cold it should stop the fan turning but as engine warms it should get more resistance and try to shred the newspaper. (Free when cold - locked when hot) Careful to...

It should roar like a tank on start up then go quiet then roar again when it gets hot. just because its turning does not mean its working right.

How does it sound, does it roar or is it quiet on cold start up?

If no traces no leaks ? 🤔

And here for only 3 days. Won’t even let me tag him.

How does the fan sound on cold start up?

That's definitely not something I'd like to even try 😜😂

if you don’t have sunroof 😂 unless p38s can do backstroke

Are there traces of antifreeze around the coolant tank?

Like a P38A but everything is a little higher.

turns out there no pressure in the coolant :( hopefully that means a new cap required