Hi _
Appreciating this new effect, I see in the KSP manual, the following code: $ENGINE_PAR_DIRT_BLEND
Can you figure out what this means ?
Sorry but still haven't found the solution !
So, I have the answer thanks to Mario:
$ENGINE_PAR_DIRT_BLEND only works in parallel routing mode (this is of course after you set the $ENGINE_PAR_DIRT_MODE parameter).