A Quick Question About Coolant

I need to swap my starter motor out(finally got funds for a new (to me) one.

I need to drain the cooling system, as there's a hose running right across the back of the starter which will stop me pulling it. (it's a 96 triumph sprint 900)

What coolant do you recommend? Bluecol or similar, ethylene glycol... Or that new fangled (to me... Mostly 50's technology in my stable) OAT stuffs?

I have the mot due in the next month, and the way things are looking I won't get much time to do any major work on it, so am in the planning stage at the moment.

Thanks in advance, as ever.

 

For some random reason this device won't open the link, it does that sometimes... So looked for the mannol stuff... That's not a bad price for 5l...

Ah, I wouldn't dare use our tap water, it's currently brown with peat, and the last sample of it failed the 'safe to drink' test. (again. Long story) Needless to say, it will be very acidic.

I was thinking of bottled water, but distilled makes more sense. What do you's guys reckon to premixed?

 

I usually put 50/50 in the other vehicles, so will mix mine own I think. It may also leave some over for topping up if ever required.

I'm not sure what's in there at the moment, I measured it and its good for - 20, so wants a change anyway.

I'm not sure whether to flush it as well... If there's any leaks, new antifreeze will certainly find them.