Jc- i'm checking oil not filters. Used filters to slow it down easy way.
Crash- one is synthetic, going out later for another brand synth with higher hot/cold numbers, meets same gm spec.
Tried thicker dino first, sounded a touch quieter then old dirty stuff but fresh of anything might've helped.
Yesterday tried synthetic thin stuff, possibly noisier.
Later or tomorrow i'll get another major brand synth & try.
I can't get to hoses to flush so i suck reserve dry, fill, drive turn lock to lock, repeat oil change.
90 degrees by noon till a cool winter 70's down here so winter fluids need not apply.
Edit- Thanks jc & b for cup tip