You should know what ASL is since you are a dealer. Also you just stated what HDD was and you are the first dealer I have know to call it this. Most call it Series 3000 when selling it and not HDD. Also how long have you been a dealer since it sound like you just signed up. No knocking ya, but you are so pro Mobil in your first to this post but are a dealer. Does not make sense.
Also you do not have a baseline like I stated several times before? Sound like no now and if you are basing an oil on a non-baseline, you are not getting a true reading. Even your UOA engineer should have told you this. Do not take this the wrong way but sounds like UOA are not your selling point since you are missing major issue when talking here.
My point again was you could use any oil and get low soot reading with a bypass. Plus you can MAKE a 5w-40 very easy using any oil. There were so many things you changed I would not base anything on anything at this point. Even the junk oil glaze filter will mess them up. A bad BARO sensor, poor glow glow relay (or grid) and peoples beloved PS additive will add to wear number bigtime. etc etc. Even what adds you put in will do this.
I am not saying switch but things do not make sence. Also seems like people keep missing the point with UOA. They primary was not invented to test oil. I pull 1 to 2 a year, an auto since I have been saved by UOA's.
If using a turbo I will take Amsoil over mobil due to the typ issues with turbo;s and both virgin UOA on the oils.
YMMV...have fun folks
Sorry, I didn't get mt B.S. in BS from Amsoil U.
I don't recall when I started, but it's been several years now. Well before the no online direct sales policy came in. 2002 if not earlier I would say.
Soot is not the issue here. Sorry I mentioned it, but I think if you re-read my posts you'll see that I discontinued analysis due to soot loading and use/abuse requiring a more frequent dump intervals.
I used my sampling to test engine wear as we crept the power levels up. We did not like what we saw so we switched oils. Just common sense. When a lube engineer that I know and trust states that a 40w has proven to provide better cushioning for the shock loads of a compression ignited engine I listen. Hard to find ANY diesel oil in 30w these days.
Along the way we started to mess with the Donaldson filter setup. We were seeing good results, but now wanted to extend the drain intervals.
P.S. The same lube engineer was very quick to point out successes that he had with the Amsoil EA (Donaldson) oil filters when they first came out. He highly recommended them.
I'll put it simply.
Delo 400= good results with declining wear metals
Amsoil 5w30= not so good results with increased wear metals.
Mobil Delvac 1= excellent results with declining wear metals
If I were to run Amsoil it would carry a 40w suffix.
I'm not for sale to anyone nor do I have unwavering loyalty to anyone in the oil biz. No Amsoil tattoo on my ***. No red white and blue amsoil shirts although I do have an Amsoil hat that was given at the Diesel Power Challenge this year.