Use the manufactures recommended coolant, pure water will cause corrosion. Best mix is deionised water and recommended anti freeze. Whatever you do, do not use water on it’s own.
I use Motul motocool. https://www.24mx.co.uk/motocross-pa...MIj_X__uuv6wIVUe3tCh2uwA2CEAQYAiABEgIaU_D_BwE
No issue with temp when at standstill at lights. Std 998. Your tuned engine should be ok, on a fan set up. Especially at idle. Temps do creep up but fans should keep it under control. Have you got all hoses in the correct places, fuelling ok (not running lean) working thermostat, working rad cap, good condition radiator and no air locks? I use a 1098RS rad on a track bike but doubt it offers anymore cooling than a std rad. It is the one without the extra lower side section of cooling fins. Much the same shape as a std rad. If you are having trouble with excessive heat, no cooling fluid of any type will help. You are looking to mask the problem, rather than fix it.
maybe get one of the laser temperature guns to measure in and out temp of the radiator, to see the temperature differential. is the water pump working effectively? air locks etc? is the radiator cap functioning correctly as if the pressure drops or isnt maintained the fluid will still boil off and the heat will rise rapidly
Having a Triumph Stag I’m quite up on heating issues! Waterless coolant is I believe more dense than water and would make the water pump work harder ( bad for a stag) I run the stag on distilled water and 30% anti freeze. I see no reason why a Ducati can’t run the same? Like Stags, you need to find out why the bike gets too hot. Is the rad matrix blocked? Give then engine and rad a proper flush, forwards and backwards. As Nathanhu says is the rad cap ok? Is the thermostat operating correctly?
The engine of the bike is adjusted with panigale elektronics and a bigger airbox so there is not a lot of space. I have got the bigger radiator wich fits the oem bodywork with two smaller fans. When both fans are on the temperature will rise slower but it rises. How can I check if the thermostat is working ok and the waterpump is working ok?
I’m not sure on either, are these thermostats like the old fashioned ones where you can put them in hot water to see if they open? If you can remove the stat you may be able to run the bike (with stat cover re fitted) and possibly see the water flow with rad cap removed? Of course, I may be talking bollox as this may not be possible on a Ducati where it is possible on my stag! I’m sorry if that isn’t much help
i use an small temperature laser device, to see the temp difference between the sides of the radiator, and also the thermostat housing in and out, this will give the a quick overview of where there is temp differential
I use this Evans coolant on my rc390 cup bike (which have a history or overheating) for standard track days, never had any problems with it. Interestingly my local dealer for the coolant is a Landrover dealer, who use the stuff extensively in the older series Landrover models and they swear by the stuff.
Ok I have that as well so I can check that. But I don’t understand if you can see if the waterpump doesn’t work properly?
if you can see the fluid level inside the radiator when the engine is running, you should see some evidence of flow if the pump is working
no I can’t see that or use transparant hoses? I will check this somehow how does the pump works? Is it always on when the engine is running the same when in neutral?
Water pump runs continuously. @CarloL fitted a bigger pump in this thread https://www.ducatiforum.co.uk/threads/project-748s.65168/page-2#post-1334951
It's a cover, not a bigger pump, as far as I can see. Using a larger cover, I guess it has a larger void inside, whilst retaining the standard impeller can actually reduce the efficiency.
