Radiator Flush Question - Page 2 - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #11 of 13 (permalink) Old 08-01-2020, 12:07 PM
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Originally Posted by SkooterG View Post
I *flushed* my FJR's cooling system *once*. Overkill.

Now, after a few hundred thousand miles, this is my coolant maintenance regimen: Every 30k or so, when I do a valve check I simply drain what coolant I can, and then fill with new. Simple, no?

+1. Skooter is a genius. This what I do as well. As I ride about 12k each year the fluid is changed once every two years. Skooter has lots of miles and I mean big miles on his FJRs so this is time tested advice.
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post #12 of 13 (permalink) Old 08-01-2020, 12:10 PM
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The FJR is no different than any other small displacement aluminum liquid cooled engine.

Those coolant service intervals are 50k and 75k. Unless you have some other mechanical service (like valve lash) or break down that requires coolant service there is no reason to mess with it.

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post #13 of 13 (permalink) Old Yesterday, 06:59 AM
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Originally Posted by AtlRiderrr View Post
Unless the FJR has a magical engine that is different than every other engine, Iíd imagine this would be just fine. Cars often have 50k intervals... so 30k should be fine even if a little old gets mixed with new. Obviously assuming your gaskets are fine and not blowing-by anything *shrug*
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Originally Posted by mobilemike View Post
The FJR is no different than any other small displacement aluminum liquid cooled engine.

Those coolant service intervals are 50k and 75k. Unless you have some other mechanical service (like valve lash) or break down that requires coolant service there is no reason to mess with it.
Yoose guys are cruel ! You have to remember that some folks simply MUST obsess about getting every single molecule of old coolant out.

Russ
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