OEM! Whatever the engineers designed for your application. Although; there maybe better alternatives. I defer to the Master Mechanics.......I'm smart enough to know that I'm not smart enough to know. If that makes sense.
When in doubt. I always defer to OEM.
I agree about Valvoline and Redline ^^. You can always get a stout motor oil like Mobil 1 0W40 and add a can of BG MOA. Just know that oil has a carefully balance of detergents, dispersants etc, but it's your decision.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by UG_Passat</div><div class="ubbcode-body">Modern by what standard or timeframe?
That is my point! I couldn't find one. Just wanted different perspectives and opinions.
Serious question, that maybe subjective. *Define Modern Engine:
I'm always reading about modern engines in various contexts, mostly on BITOG.
Did modern engines begin with fuel injectors? 1990's (20th century) or 2000's (21st century) or earlier?
Pennzoil Ultra has received the most complaints of "additive fallout" since I've been perusing these forums. I've read the archives and it's a constant concern. Just shake and pour or find another manufacturer. Shell is a major conglomerate and has an excellent reputation.
I would like to...
My expectations are that it meets the spec. I;m not a Chemist nor a Tribologist. Can't give an expectation without education and experience.
There are several intellectuals on this board that can certainly answer the question. But, I would need to read published research (probably...