RE: please help diff oils
Id suggest getting some oils and trying it out .
Usual setups are :
5000w Front ,5000w center ,3000w rear.
This would be a starting point ,from there you could see if it makes a difference first ,and if it does.Then look at fine tuning to other possible combinations.ie:
7/5/3
7/5/2
5/7/3
........etc....