coelgrim

Hello everyone, I am newbie here and I own an ninja 250R yr2010, I just changing my coolant here (following standar procedure in service manual).
I drain the old coolant,
Drain the coolant from reservoir tank, then
I put a new coolant in till the filler neck and full line in reservoir tank!
then I purging the air using normal procedure (running the engine with radiator cap OFF).
After that, I put the radiator cap ON, and then running the engine till the radiator FAN swings!
voila, that should be done, then I open the radiator cap, check the coolant level,and found the coolant level is dropped a bit, then I add a small amount of coolant to get to full of filler neck.
and then again I warm up the engine (this time by riding it around my neighbourhood), stop and wait till cold, then open the radiator cap again, check the coolant level, I just shocked, AGAIN, why the coolant level is again, dropped a bit??
Here is the picture of the level where coolant dropped a bit :

more close up pict :

..
Even so , the level of coolant in reservoir tank is just fine !

the view when reservoir cap off :

Please help me, is the level of coolant normal? Does this happen to everybody? Thanks btw

TheRussian

You're fine.

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coelgrim

Really? it will stabilize eventually?

TheRussian

It doesn't have to be to the top, if anything, you overfilled the overflow tank. It should only have fluid up to full line, not to the cap.

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coelgrim

yea up to the full line, in my case here, The coolant is not on the full line (below full ine by 2~3cm ), so is it fine? will it stabililze and get into full line somehow?

TheRussian

Get a good picture of your overflow tank and post it.

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coelgrim

here, Do you mean overflow=reservoir tank?



thanks b4

TheRussian

I didnt see the original pic, sorry, I was on my phone.

Looks like its filled properly.

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coelgrim

so, is it fine? I do again add more coolant to filler neck, but after running the engine,wait till cool, open radiator cap, the level just wont go anywhere more top than this line :

williamr

When the engine is fully up to temperature the coolant has expanded. If it was full to start with there's a greater volume of coolant than there is room for it in the colling system, so some is vented off. By the time it's cooled down enough for it to be safe to remove the cap it's contracted again, so the system no longer looks full. It's normal.

Rob