No - I have not done an Analysis on it yet, but I was told the levels are high enough to protect the older engines.

It's nearing time for me to pull a sample and mail it in.... will let you know ..........

LarryT
91 300D
youroil.net

-----Original Message----- From: Dimitri Seretakis
Sent: Sunday, July 03, 2011 2:39 PM
To: Mercedes Discussion List
Subject: Re: [MBZ] M1 15w50

Do you know what the zinc levels are on the Brad Penn 15W40?

Sent from my iPhone

On Jul 3, 2011, at 2:22 PM, "Larry" <l02tur...@comcast.net> wrote:

For my last change on the '91 300D I went with Brad Penn 15W40 from LN Engineering. So far so good but all I have to go on is the pressure at idle - which looks better than before - but there are so many variables it's not a great gauge. I'll run a test on it before long and see what the ZDDP levels look like after ~2000 miles or so.

I think the cost to have 2 gallons plus shipping (Pa to Va) to my door was around $75.


LarryT
91 300D
Youroil.net


-----Original Message----- From: Curt Raymond
Sent: Friday, July 01, 2011 2:13 PM
To: Diesel List
Subject: [MBZ] M1 15w50

Grabbed 8 quarts of M1 15w50 yesterday, I need to change the oil in my '78 240D. I like using the 15w50 in the summer as it leaks/is consumed a bit more slowly.

Anyway today doing the change I learned 2 things,

#1 oil filters from Car Quest are NOT as good as from Rusty - the o ring is too big and won't seal the canister, fortunately I had a spare. I though I had a filter from Rusty, turns out it was for a 601

#2 M1 15w50 is no longer diesel rated, SM only. I had an older bottle that was CF that was probably bought last year (post facelift, so recent). I dunno if the manufacturer has to continuously pay for certification and they decided they weren't selling enough to diesel owners or what but I'll run a short change on this one (I usually go 7,000 on the 240D, I'll go down to 5 or so) and switch back to 5w40 which I hope still has a C certification, if not it maybe be Amsoil although my local Car Quest has Royal Purple...

-Curt

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