I just got the valve stem seals done, so assuming its still not burning a quart every 150mi then I will be getting Rotella-T 15-40 changed ASAP. I hope it will clean up the 'red' valvetrain a little better than the current 10-40 I am using.

So, based on that I know about the differing cams now, would it be safe to say that Dino oil should absolutely be used in any early 103 using the earlier tin-plated cam design? Is it still recommended on the updated design too? Just so I know for future reference and knowledge.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k

use 0w-30 for 500 miles, twice or maybe three times. heavier oils don't clean as well as light oils.

but it really doesn't matter, change your hot and often and you'll be fine

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Current
2006 E320 CDI, 57K bought at 67K "Liesl"
1986 190E 2.3-16, 198K bought at 56K "Brigitta"
1987 300TD (Chuggin Along), 292K "Friedrich"
1995 E320 Wagon, 200K "Louisa"

Past
1987 300SDL, (sold) 125K, bought for 1$ "Kurt"