Oil Cooler

[Big Geordi]

Just a thought if u have a an after market oil cooler with take offs from the top can u put more oil in as the cooler would always b full in theory?
And when u change your oil u would then have to empty your oil cooler as it would always retain some used oil?
Thoughts on this peeps?

[KiwiCol]

Sounds logical B.G.   The cooler would always have to be full of oil if the connections were at the top.  How much would they hold? ½ a Litre?

[Speedy1959]

I have an after market cooler fitted the normal way up.. In other words with pipes at the bottom..
I can tell you the whole cooler gets hot and not just the lower part.
Andre (on this forum) was saying there is a valve within the engine that stops most of the oil from the cooler returning.
This would be backed up as when I changed my original cooler (bike had been stood 3 days) there was about .75 of a litre of oil that came out.
I reckon the coolers must self bleed the air  some how.

[Andre]

Thank you Simon. It's great to have actual data instead of just theory.