Hi guys,
Looking for some advice on high iron numbers that I'm starting to see on my 2008 Chevy Trailblazer SS with just over 57k miles on the LS2. Engine is all stock other than an IEATSRT8 CAI (uses an S&B filter). This is my Fall/Winter daily driver and it sees mostly just highway miles - no racing or anything out of the ordinary.
Here's the latest UOA:
As you can see the Fe numbers were elevated during the previous run, which was using the last of my PU 5W30 stash (although the numbers look more like PP). For the latest run I switched over to my old standby of Redline 5W30 and took a sample at only 1355 miles to monitor the iron levels. Looks like on a per mile basis iron is up even more vs. the previous sample and now silicon is up too.
My plan is to look over the intake and make sure there are no air filtration issues and beyond that I was planning on following the Blackstone advice to change oil again and re-sample after another 2k miles. Any thoughts or advice? Anything jumping out that I should be looking at based on this sample?
For reference, oil filter is a K&N HP-1017, which is the same oil filter brand that I've been using for all of the previous samples. There have been no mechanical changes to the engine during the series of samples depicted here and, FWIW, the truck runs and drives great (no vacuum leaks or anything odd that I can tell).
Thanks.
Joe
Looking for some advice on high iron numbers that I'm starting to see on my 2008 Chevy Trailblazer SS with just over 57k miles on the LS2. Engine is all stock other than an IEATSRT8 CAI (uses an S&B filter). This is my Fall/Winter daily driver and it sees mostly just highway miles - no racing or anything out of the ordinary.
Here's the latest UOA:
As you can see the Fe numbers were elevated during the previous run, which was using the last of my PU 5W30 stash (although the numbers look more like PP). For the latest run I switched over to my old standby of Redline 5W30 and took a sample at only 1355 miles to monitor the iron levels. Looks like on a per mile basis iron is up even more vs. the previous sample and now silicon is up too.
My plan is to look over the intake and make sure there are no air filtration issues and beyond that I was planning on following the Blackstone advice to change oil again and re-sample after another 2k miles. Any thoughts or advice? Anything jumping out that I should be looking at based on this sample?
For reference, oil filter is a K&N HP-1017, which is the same oil filter brand that I've been using for all of the previous samples. There have been no mechanical changes to the engine during the series of samples depicted here and, FWIW, the truck runs and drives great (no vacuum leaks or anything odd that I can tell).
Thanks.
Joe