Oil cooler

[Gene]

I have a 1985 CB 650SC. It has an oil cooler, but my question is, is it thermostically controlled or on all of the time?

[Larry Fine]

If it's like most, one tube is always open for oil flow, the rest via a bi-metallic strip.

[mollusc]

I thought that there was no active diversion at all.  Some of the oil goes through it, and some doesn't.  I would check the schematics and/or service manual for confirmation

[Gene]

 The reason I asked is because the official service manual representation of the oil passage is confusing.

[mollusc]

Service manual for my 700S does not show any active diversion for the oil cooler, just a split in the circuit.  Certainly no thermostat.