Hello all,
Happy I posted here, lot's of great information. I learned the oil HTHS is as important as the additive pack, and their is variability in these oils.
A couple points to add to the discussion.
Agree- Approved, and specficied / sutable are different things.
The Redline is actually very interesting, there ar multiple oils,
1. The Normal Redline 5w40 "Sutable for A40",
As specified for Audi, BMW, Mercedes Benz, Porsche and VW applications
www.redlineoil.com
2. The Professional Redline 5w40 "Approved for A40"
Certified protection for your warranty at a lower cost.
www.redlineoil.com
3. The Normal Redline 5w40 Euro "Sutable for C40" Porsche new lower particulate spec?
Euro-Series 5W40 Motor Oil
www.redlineoil.com
I really like the Redline 5W40, 4.4 HTHS, Sutable for C40. From blackstone high ZDDP, high HTHS, easily available.
I would like to stay with A40 approved, or suitable for A40. I am not smart enough on oils, so I rather stay close for now.
I am thinking top runners are:
1. Redline 5W40 Regular
2. Motul 8100 xcess gen 2 5w40
3. Mobil 1 5W40 HTHS is 4.4 and it's actually A40 Approved. I found it's $7 a quart, so this is my actual front runner. Here is a VOA comparison. Lower ZDDP, but appealing.
Actual application will be a garage queen, spirted weekend drives in the country, maybe 3k max between oil changes, started in a heated garage with temps no lower than 45F.