There are two strange looking connectors at the bottom of the engine and i was told by another rider that they are for an external oil cooler. I was just wandering what they are really for... Because i live in a hot country and if it is possible to add extra cooling for my estrella, that would be wonderful. My estrella already runs pretty hot.

Yes, the covers are for a oil cooler.

But you don’t need one. During summer @ 35 deg C I never measured 90 deg oil temp on a Estrella with 34 HP in normal operation.

https://www.webike.de/products/9651929.html

You can use 10W-60 oil instead to increase hot temp oil pressure - which is a weak point of the engine.

Regards

SD

Thanks a lot for all the information.