Hi John,
My 602 ('91 300D 2.5t) also seems to wait before it pegs - but I
checked the Owners Manual and it said the Pressure should be pegged by
approx. 3000 RPM. Mine is like yours and pegs at 1600-1800rpm. So,
according to MB it doesn;t seem to be a problem.
I had been using 15W50 Mobil 1 but changed to the more Diesel specific
Mobil 1 Turbo & Truck 15W40 oil (Walmart has the 5 qt jug for ~$20.) and
while I was hesitant to change and lose the added viscosity, but it seems to
have been for the best. I don't see any negative aspects after 9000 miles.
HTHs
Larry T (67 MGB, 74 911, 78 240D, 91 300D)
www.youroil.net for Oil Analysis and Weber Parts
Test Results http://members.rennlist.com/oil
PORSCHE POSTERS! youroil.net
Weber Carb Info http://members.rennlist.com/webercarbs
.
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <mercedes@okiebenz.com>
Sent: Monday, July 23, 2007 2:41 PM
Subject: [MBZ] OM602 Oil Pressure
> At what RPM should I peg my oil gauge? IIRC, on my 617 it pegs by 1400 or
> lower. On my 92 300D 2.5T it doesn't peg till almost 1800-2000.
>
> If thats not right what all do I need to look into? The first thing I'd
> think
> is the o-rings on the oil filter stem. Anything else?
>
> Also, I think the OM603's had the oil capacity reduced by .5 quart. Is
> that
> also true for the OM602?
>
> Thanks!
> John
>
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