2003 k1200gt - coolant question - K-Bikes.com - Excellence in Motion
 
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post #1 of 4 (permalink) Old Jul 16th, 2019, 12:56 am Thread Starter
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2003 k1200gt - coolant question

A local Yamaha dealer put in premixed 60-40 coolant in my 2003 k1200gt. At the time, it seemed ok and not a big deal. I am reading that the Clymer specs say it should be 50-50.

Would the 60-40 coolant raise the temperature in the cooling system more than 50-50 coolant?

I am thinking of replacing it if it can lower the coolant temperature a bit.

Thanks for the comments in advance.
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post #2 of 4 (permalink) Old Jul 16th, 2019, 3:42 am
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Nope, won't make squat difference to your engine temperature.

I'd rather have the "right stuff" (Pentofrost NF or "BMW Blue") and if it bothers you, have it replaced, but as long as the system was completely drained (block included) so there's minimal to zero mixing, I don't expect any trouble.

The above worth what you paid for it. RTFM; the stuff in your bike may not match factory specs.
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post #3 of 4 (permalink) Old Jul 16th, 2019, 9:42 am
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Changed how long ago?

Yamaha changed their coolant chemistry a couple years ago.Still hard to find the specs although there are hints them specs arent't right for BMWs.

https://www.tracer900.net/topic/4368...olorchemistry/



BMW specs are NO nitrites or phosphates and low silicates.Nitrites especially can turn into nitric acid if left too long in a cooling system and acids will corrode parts.

Early Ks from 85 to 90s running then with the green regular coolant to BMW specs did suffer from corroding water pump seals/shafts.Early 90s and BMW changed the coolant spec to what we use now.

60/40?Coolant to water? Probably for snowmobiles as in better freeze protection but certainly not a motorcycle requirement.50/50 to BMW specs but yellowish in color is what I use.Recochem brand.

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post #4 of 4 (permalink) Old Jul 16th, 2019, 11:51 am Thread Starter
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Thanks for the feedback. I am also thinking 60-40 vs 50-50 doesn't matter. I don't need to worry about freezing temps.

The coolant was changed 9 months ago, using Yamalube 60-40 blue. Says Ethylene Glycol based.

Max BMW doesn't ship antifreeze (state laws) and the nearest BMW is a bit of a ride for me. Nearest friend-recommended dealer is closer. Rick's Yamama in Lockport was a good experience.
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