Honeslty, if YOU dont know what kind of oil goes in your car you need to be on the fourms asking ppl.... US!
I Highly doubt 75W90 would even leave your oil pan. Its a heavy oil. Did you even look at the cap and see what it says 5W30.
Please look at your post, you responded to a reply saying redline oil was recommended.... But it says "transmission oil" MAN!....
I hope you dont own another subaru! Untill.... you atleast find out what kind of fucking oil to use....
Do you even know the difference between the engine and transmission?