5w30 is Correct. Most new engines for passenger cars and light trucks are
designed to use 5w30. This guy is a quack. Don't listen to him. He's a
dealer not and engineer.
This may help.
The function of oil in an internal combustion engine is to:
Create a hydrodynamic wedge between moving parts
Assist in thermal dissipation
Absorb and buffer contaminants formed during combustion
Remove particles from moving part areas and transfer to filter
Wait at least 1,500 miles before switching over a new engine to synthetic
lubricants. The seating of rings and wear in of other engine parts usually
occurs within the first 500 miles and should definitely have been
accomplished by 1,500 miles on today's new engines. Under 1,500 miles you
should follow the manufacturer's recommendation for drain intervals and
break procedures. Furthermore, waiting to at least 1,500 miles gives you the
opportunity to assess the mechanical soundness of the engine and the
opportunity to report any unusual conditions that may indicate a latent
mechanical defect in your new engine.
Also, never listen to the dealer if he contradicts the manufacture's written
information unless he is willing to put it in writing and back it up with
warranty coverage. This is so when his vast experience selling cars and his
big mouth and ego ruin your truck, you can minimize your losses.
Patrick O'Day
2000 Dakota 4x4, 4.7L, CC
Profile at www.dakota-truck.net/profiles/dakota/Cy9WFjn1QtCYw/profile.htm
----- Original Message -----
From: "Paul Macey" <pmacey@ans.net>
To: <dakota-truck@buffnet.net>
Sent: Monday, April 30, 2001 7:54 AM
Subject: DML: New 4.7L and When To Put Synthetic Oil In
> I was just at the dealer going over my new 2001 DAK QC
> AWD/4.7/Auto/3.92/LSD/4W-ABS/T&H/Sport+ before they prep it, and asked
> when I could put in synthetic oil.
>
> He said even though 500 miles is considered broken in, to wait till 8-9K
> miles before using synthetic, as synthetic oil would speed up the break in
> process on a new engine, something you don't want to do
>
> He also said not to use but 10w30, that the owners manual should not
> list 5w30 as a recommended oil...thoughts on this?
>
> BTW, he showed me a new DAK a dealer drives, pulled out the dipstick so I
> could see some metal filings glinting in the sun, a normal part of engine
> break in, he said...anyone see this also?
>
> FWIW, I'll be using Royal Purple Synthetic Oil, possibly a Mobil1 filter.
>
>
>
>
>
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