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Blackstone Comments: There's quite a bit of extra bearing wear (at copper and lead) this time, so we don't suggest trying for longer oil intervals just yet. All other metals look fine though, showing that your engine remains in good health for the most part. You mentioned 90% city driving, and...

I stitched to PP this run and did not use the remote start but the lead continues to increase and now Tin is up as well. I had wanted to stretch the OCI out to 6K and based the many posts on BITOG, both PP and PYB are very good oils. I'm thinking about switching back to Castrol GTX or possibly...

2009 Silverado GM 5.3L PYB 5w30 SN What about the HIGH LEAD?? This was my 4th run with PYB (2nd run with PYB/SN). OLM still showed 62% remaining and I had wanted to extend oil change out to at least 5-6K. Current fill is PP 5w30 SM. All suggestions/comments welcome. BLACKSTONE COMMENTS: Wear...

Hello all, I have been looking at this site for quite some time now, and yes, it is quite addicting. This is my first ever UOA and post. Looking to keep this truck for a very long time. Changed FF at 521, second change at 1708. This is the second run with Castrol GTX 5-30. This sample was run...