Bruce In Philly

2009 C2S 196K miles

If you have an analysis you want to post, do not post here, post it here where there is a collection of posts: https://rennlist.com/forums/997-foru...-analysis.html

So.... what do you think? Why the curves... shouldn't the lines be generally flat given my test/change intervals? Pete: give me some good news please!!!

Coupla items:
- Ceratec apparently contains quite a bit of Moly as well as their ceramic stuff - note the oil sample where I used LM MoS2 had the least moly in the sample.
- Oils are all Porsche approved A40 plus an additive (first sample I am not sure what I did, I think I had MoS2 in there)
- All Blackstone

Peace
Bruce in Philly (now Atlanta)

MrMoose

Boron and moly (and zinc / phosphorus / calcium while we're at it) are almost certainly from oil additives: either those in the oil itself or the stuff you're adding. Monitoring them doesn't really tell you anything useful.

I think all you can really say from this is that your engine looks okay, and your wear metals look fine and are consistent across a variety of oils and additives. I don't think you're getting anything useful out of these regular measurements (especially with 196K on the clock) so you can probably just stop doing it, but it's your money.

silver_tt

Wear looks decent but would be lower if you used a better quality oil. Most of your samples have sheared down into a SAE 30 grade, especially considering you added 1.75 quarts in the 5K mile OCI.

8x57IRS

Everything looks very even, no significant outliers. If the oil filter is also always evenly "loaded", I would be happy with that motor. Btw, I would avoid additives, quality oils are sufficiently additivated.

Petza914

Brice,

It's nice and stable, but as I've mentioned in oil threads before, LM and M1 both show higher bearing wear than Driven does. You'll get lower metal wear numbers if you switch to Driven DI40 for your DFI engine - it will have the Moly in it already and higher zinc and Phosphorous and why the non-akumimun metals will go down.

Other than the iron wear numbers which aren't super high, just marginally high, your engine looks good, especially for the mileage
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