coolant change

[dudejb46]

I may be dumb but, I know I need coolant in my 400, (its pure water atm!) But how much? Is it pure coolant or a water mix?
Thank you
____________________
2002 zip 2002 bandit project 2004 fzs1000 2009 883r

[salty21]

its usually a 50/50 mix of coolant and distilled water
____________________
04 NSR 125(sold) ---- 03 CBR 600rr(sold) ----90 pan euro ST1100 '' ----02 CG 125
94 CB400 Super Four ---- 2000 VTR SP1 (sold) ---- 08 ninja p8f(sold, meh) ----05 CBR600rr

[dudejb46]

Thank you
____________________
2002 zip 2002 bandit project 2004 fzs1000 2009 883r

[gray84]

yep normally 50/50 and try and used distilled water. try and flush distilled water through to remove the normal hard water if you can really be arsed...
____________________
Road bike - 2002 YAMAHA R6(SOLD) 2008 YAMAHA R1(SOLD) 2007 APRILIA SXV 550(SOLD) 2007 SUZUKI GSXR 600
Dirt bike - 1989 HONDA CR80sw(SOLD) 1996 YAMAHA YZ125(SOLD) 2006 yamaha yz250(SOLD)

[Robby]

If it's been running on just water for a while then it could be worth doing a flush using a rad flushing liquid first. Coolant contains corrosion inhibitors, water does not. Corrosion means that very small bits of shit will build up in small passages and restrict the colling efficiency, which is bad.

Personally I would drain it (following the manual, could be multiple drain points), flush the engine and the rad with a hosepipe, then fill with normal tap water and flushing chemical to flush it by the instructions on the bottle. If it says 15 mins on tickover, then do that, not 3 days on the redline. Drain and flush with a hose a couple more times, then refill with coolant by the instructions in the manual. If may advise you to run it up to temperature with the expansion cap removed first.

I never use distilled water, I change coolant yearly and it has corrosion inhibititors so tap water isn't going to kill it. If you're planning on going down that route, you may as well just get ready mixed coolant, only tend to need a couple of litres for a bike.

A useful future tip - choose a type of coolant and stick to it. It's difficult to completely remove all of the old coolant, so changing to a different colour can make it look dirty. I found this on my car, which had very old green stuff in when I got it and I changed to blue. 2 changes later and there's still a slight green tinge in it.

[Shreddie]

Some coolant is premixed though so there's no need to dilute it. If in doubt, read the back of the can.

[salty21]

tesco do 1L of premixed coolant for £3 a bottle
____________________
04 NSR 125(sold) ---- 03 CBR 600rr(sold) ----90 pan euro ST1100 '' ----02 CG 125
94 CB400 Super Four ---- 2000 VTR SP1 (sold) ---- 08 ninja p8f(sold, meh) ----05 CBR600rr

[ms51ves3]

[magpiemale]