What weight oil do you use?

[Swifty1638]

Ok, I am a bit lost on this. As you all know, I got the talon running/tuned this year, and 4 days later the turbo blew (keep the PTE comments in a different thread, and this one clean). I rebuilt it, and now it's all back on the car, all good again..so far. My concern is that I was running too much oil pressure for it, and that caused it to blow. PTE is of NO help in trying to sort this all out, so I'm guessing now as to what caused it. Besides running more boost (36 vs 26-28 it was before) the ONLY real difference is the oil. I WAS running 10w30, but now I'm running 15w40. I am curious as the oil psi has gone up, idle it was 25, now it's 50. cruising/pulls it was around 75ish, now it's over 85-90 psi! Could this "flood" the turbo? Keep in mind, it's a thrust bearing, p-trim. Feed is straight off the oil filter housing, NO balance shafts. it's a -4 an straight into the turbo. I have a oil filter for it on the way, but I dunno if I should also be running a restrictior, or go to a thinner weight oil..opinions?