The reason I refer this oil is because this is really a 10W-40 grade oil unlike other brands available, where oil tends to get thin. I will be trying out 10W-40 version of LM next time so to compare LM vs Repsol.
And originally (also mentioned in the manual of CG-125 OHV) 10W-40 grade oil is recommended. Our problem is that we have no real 10W-40 graded oil.
"Engine/gearbox unit Good quality SAE10W/40 engine oil, API class SE or SF" >>> This is the extract from the manual. You can download the manual here (also shared by some fellow in other thread).
http://die-kleinkraftrad-ig.de/wissensdatenbank/reparaturanleitungcg125.pdf