Yamaha R1 Forum: YZF-R1 Forums - View Single Post - Thermo fans come on, but temperature doesn't drop
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post #11 of (permalink) Old 03-09-2016, 07:12 PM Thread Starter
I know more than you.
Join Date: Dec 2013
Location: Australia
Posts: 339
Originally Posted by TwentySixRed View Post
Air bubble? Not really. After 5-10 mins ride any air bubble in the cooling system will have been thoroughly bounced, leaned, and vibrated out. What you could check, is if there's any bugs or gravel in the radiator fins, or bent fins, leaves stuck between the fans and the radiator, or any other kind of blockages. A guy I know bent a heap of his radiator fins with his pressure washer. Just sprayed the high pressure spray right onto his radiator and voila - heaps of bent radiator fins. Spent half a day with a nail file straightening them out again. So don't Gerni your radiator, it'll **** it.

Also, check this link about coolant mixing: Coolant Mix and Overheating

And another article with graphs: Things you should know about coolant | hellafunctional
Thanks mate! Those links are super helpful. The radiator looked pretty good when I checked it but I'll take a better look. I might need to mix my own coolant instead of buying premixed 50/50.
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