Originally Posted by
GraphiteGhost

Seriously, this is NOT your standard car engine I suggest you research this motor and MB 229.3, a lot, BEFORE you post generic engine specs.

Gentlemen, please!
Engine oil grade is a function of an ambient temperature range in which the car operates. Chrysler has chosen to keep things simple by making a singular recommendation: 0W40. So, too, nowadays Porsche does the same thing; however, if you think that owners of late-model 911s restrict themselves to that single suggestion you are mistaken. At least not by those who drive the cars on the track.
Consider this ACTUAL oil chart for a Porsche 928 (which I own) by way of example.
Yes, Porsche is saying that it is perfectly acceptable to use 5W20 up to and including a 20W50 but you must govern yourself according to the temperature table. Clearly the oil one would choose for use in Finland might differ from the deserts of the United Arab Emirates. My point is using 5W40 or 5W50 is perfectly acceptable in North America.
Originally Posted by
pizzaguy
20W60 in the M112 engine? Really? If you don't get blown off the page for that post I will REALLY be surprised. I get all kinds of crap for putting 5W50 in mine......
I may get "blown off this page" as you say but at least I know I won't be blowing up my motor come the hot days of summer if I use a 5W50or 10W... Perhaps as a final thought (for me anyways) one might wonder if these light weight oils are for preserving longevity or upping the manufacturers CAFE numbers...
For more fun visit:
https://bobistheoilguy.com/motor-oil-101/