The engines of today are much higher quality (engineering and tolerances)
than those of old. Can you "romp" on them right off the showroom floor, yes
- but there still is some break-in. The biggest issue isn't with the
engines though, it's the towing/hauling. During the first 500 miles - NO
TOWING...the differential(s) need to break in first (along with brakes and
clutches).
BTW: The oil used in these engines isn't just based on EPA requirements,
it's primarily based on the internal engine tolerances. Bearings now are
down to .006" variance and oil selection is critical. If the cap states
5w20, that's what should be used. Thicker oil can cause premature wear or
failures with these tolerances.
- Bernd
-----Original Message-----
From: knox.james@sympatico.ca [mailto:knox.james@sympatico.ca]
Sent: Tuesday, October 16, 2007 9:55 PM
To: dakota-truck@dakota-truck.net
Cc: knox.james@sympatico.ca
Subject: RE: DML: RE: Factory Engine, Run - In Procedure, Gasoline & Diesel
>From: "Bernd D. Ratsch" <bernd@dodgetrucks.org>
>Reply-To: dakota-truck@dakota-truck.net
>To: <dakota-truck@dakota-truck.net>
>Subject: DML: RE: Factory Engine, Run - In Procedure, Gasoline & Diesel
>Date: Tue, 16 Oct 2007 11:37:43 -0500
>
>
>The engines are bench tested (oil pressure and flow) and then installed
>into
>the vehicle. After installation and vehicle build, they are run at the
>factory for about 1 mile. Then, they arrive at teh dealership where we
>check them over and drive them for another 5-10 miles.
>
>- Bernd
>
>-----Original Message-----
>From: knox.james@sympatico.ca [mailto:knox.james@sympatico.ca]
>Sent: Tuesday, October 16, 2007 11:17 AM
>To: dakota-truck@dakota-truck.net
>Cc: knox.james@sympatico.ca
>Subject: DML: Factory Engine, Run - In Procedure, Gasoline & Diesel
>
>
>
>Are new engines test run in the factory ?
>Should a no mile'age vehicle engine right from the dealers lot be run in ?
>
>Jim Knox
>91 Dak
>
>
Thanks for the factory info Bernd.
Next question, Rite off the lot should the engine be run in gradually as in
speed, rpm and load.
Some people drive 80-90 mph rite from the start.
I'm old school in thinking of rings, bearings, ect wearing in,initially at
speed limits and 2000 area rpms
This is in regard to moving new vehicles ( dealer trades )
Jim Knox
91 Dak
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