Ah man that sucks I'm hate reading about that. Frothing is where the oil turns to foam in the oil pan after its sloshed around and in and out of the engine. This usually turns into bearing failures and stuff like that being it's not oil on the bearing surfaces it's the foam which really doesn't have the same effect on the bearing surfaces as the oil does.
As spirited of a driver as I am and having an extremely high HP Evo, I learned about Schaeffer's oil a long time ago and I thought the guy who told me about it was nuts being a farmer. When u blew my first turbo up I asked my local turbo guy why and he told me bearing failures occur over high temps and after sitting on the bearings to long. He as well pointed me in the direction of Schaeffer's.

Another funny story is I was at the track way back when I had my 2.4 nad black setup and I went down the track and didn't realize I forgot to tq my oil filter down and it came loose just after I launched and needless to say my day was done and I oiled down the track and every last drop of oil i the car.

When I got back toy put area oil all over the place under the car and being I didn't notice it had come loose I figured the engine was done. Get back to my house undo the drain plug nothing in the pan was completely dry. Took the pan off and cut my oil filter off thinking there would be material all over the place. Needless to say barely anything if any ar al.
Moral of the story is this oil saved this engine with the good amount of phosphorus and zinc and the right amount of molly they is in it. I drove on that engine 5 more years till I killed it washing out the cylinders with e85 and kept trying to crank it over and over and over. Not the oils fault flooding the engine and cylinders full of e85 regardless of what oil you use is never a good idea and it cause me to move to my 2.2.

 

I think oil by itself wont "froth". not without moisture. a long time ago i have seen some signs of steam and oil mixing on the VC/cap after driving in the rain

 

Curse what Oil filter to do you use?

 

I have seen it done after a track day after a pass it was foamy which I thought was odd, but none the less it was there.

Just plain ole wix filters when I can find them out here.if I can't car quest filters being they are made by wix. That is just my preference being they trap a lot of stuff but not enough to block off the filter completely like some others I have tried. Plus I use 10w40 oil or 15w40 pending on what I can find. Slow motion told me to use 10w40 but Schaeffer's only has 15w40 so there's that as well nif I go to hold oil for my turbo and gain 2 more years I will go back to 10w40.