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When I purchased this car the oil was about as black as I've ever seen oil. I know that is not a good indication of a oil's protective ability, but it was ugly looking oil to me and I couldn't wait to get it changed. When I saw my first UOA come back and the iron was at 144 I was a bit...

Hey Guys, My most recent oil change showed a higher amount of lead and tin vs my previous oil analysis. This OCI DID include some very tough towing...75 MPG into a 25 MPH wind for about 700 miles. The engine was working VERY hard during this tow. The truck was loaded down to near max payload...

I'm a newbie and kinda screwed up my first post on my 2008 GTI a few days ago. I have the site figured out now and wanted to repost on my S4 which is also a direct injected engine. Same question here regarding the TBN. After just 6,600 miles it's been thrashed to 2.3 from a 8.0 starting point. I...

Hey Guys, I bought this vehicle used with about 26,000 miles on it. I have done 2 oil changes, the second OCI was with about 2,500 miles on the oil. I did a early change b/c the first sample came back and didn't look great. Very high Iron. Not sure how long that oil was in the car, but I know...