Best oil for eta...

[Spencer]

This will be a summer only oil.
Our average day time temperature is 22ºC
(I did search)
Thanks a lot!

-Spencer

[KenC]

I'd run 10w30.

[LikeCDoos]

i don't have an eta but i run 5w30, but i probably should be running something else.

[Blaster.]

wow 20 degrees C? thats freezing. I would run 10w30 or 5w30

[BavarianBimmer]

20°C is freezing ????? that's about 70°F that's our average temp. here too
and I run 10W40 in the M42 now
the M10 runs on 5w40 from the previous barrel but I think that's too thin (--> greasy bearings)