Re: ZDDP... another oil thread
Well you learn something new everyday. I was actually looking for info on the issues with silver and ZDDP when I found this article. I didn't know it wasn't until 2008 Subaru changed the bearings. Happy news for my 06! I've been using Redline for over 10 years on other cars and it would suck to not be able to use it because of silver in the bearings. Though I'm not sure it has enough ZDDP to affect the silver in the bearings. I suspect people using Rotella on newer Subaru's would this silver/zinc issue too since diesel oils also have more ZDDP according to the article, but it seems they don't. Which is good.