[regal]

There is talk in the thread about camshaft wear due to Subaru having issues with VVT design, a video was just posted I guess this is their third revision. Now one thing we know is ZDDP protects camshafts, the SN oils are pretty darn low on ZDDP. I'm going to stick with my regiment of adding a 1/2 qt of 0w30 Mobile racing oil, its full of the stuff and compatible with Toyota 0W20. Only down side is cat damage when/if the rings wear out.


I can understand why so many here take redline 0w20 as its full of ZDDP, ashame it voids the warranty.