[Chrysler300] Kind of oily in the morning for this

["Rich Barber" <c300@xxxxxxx>]

This lube discussion is getting pretty technical and more difficult to come
up with the single best answer.  Several things that need consideration:

A branded oil like Mobil 1 probably has changed its additive package over
the years, especially to comply with new EPA rules.  The synthetic base
stock probably remained the same.  Therefore, what worked well in an engine
with a high-lift cam and solid or flat lifters such as we have in our
Chrysler 300 letter cars may not work as well now or in the future.

Zinc levels do not necessarily tell the whole story (according to the
ZDDPlus website, anyway).  The P stands for phosphorus and that is the
element that is claimed to slowly poison a catalytic converter if it somehow
escapes from the crankcase to the exhaust system.  Most folks are focused on
more zinc, more better, but zinc compounds are used for purposes other than
wear protection in oil.  The ZDDP compound is apparently generally accepted
as the best compound for cam and flat lifter wear protection and it
diminishes with miles on each oil change.  In quantity, it is probably also
reasonably priced. I'm guessing that it might be a patented compound and
only produced by one company--either an oil or a chemical company.

Each of the oil company gurus that have responded focuses on zinc content of
their oil, but at least one guru (Chevron) states his oil has high zinc
content and is also compliant with new EPA specs for low or zero phosphorus
content.  That is possible, but if so, there can be little or none of the
needed ZDDP compound in their oil.

I have not seen any of the technical responses from any oil company that
specifies initial ZDDP content and that is apparently the main issue.  It is
more likely that the Diesel engine oils contain ZDDP, but as they are also
recommended by the oil companies for gasoline engines, I would think they
have had to reduce or eliminate the ZDDP compound, also.

So, at this time, I recommend sticking with the engine oil you like for your
engine and bite the bullet, pay the $2.50/ounce for ZDDPlus and add one
ounce per quart of oil at each change.  Can't hurt, might help.  A little
dab will do ya.  Cheaper than good whiskey.  Correction to previous typo:
ZDDPlus retails for $13,440/barrel.

C-300'ly,
Rich Barber
Brentwood, CA
1955 Chrysler C-300 
1986 Chrysler LeBaron T&C Convertible with 2.2 Turbo
Both cars to receive 10W-30 Pennzoil and a shot of ZDDPlus at next oil
change

-----Original Message-----
From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On
Behalf Of Jim Maiani
Sent: Tuesday, April 29, 2008 6:26 AM
To: Chrysler300@xxxxxxxxxxxxxxx
Subject: Re: [Chrysler300] Oil talk

Hello group.  It's poll time... I need your opinions.

I've been using Mobil 1 10w30 in my Dart 340 for years.  When I changed the
oil in my 62 H (413) last week, I used the same Mobil 1 10w30.  What is your
opinion on using a synthetic oil in our old engines?  Should I continue to
use it, or drain it and put in mineral?

thanks as always for your knowledge.

Jim Maiani
Houghton Lake Michigan
1962 H
1969 Dodge Dart GTS convertible


  ----- Original Message ----- 
  From: MRS954@xxxxxxx 
  To: Chrysler300@xxxxxxxxxxxxxxx 
  Sent: Monday, April 28, 2008 2:06 PM
  Subject: Re: [Chrysler300] Oil talk


  So, what would be the preferred multi-vis oil for the 413? 15W-40 or
10W-30 ???

  Mark

  -----Original Message-----
  From: Bob Jasinski <rpjasin@xxxxxxxxxxx>
  To: Chrysler300@xxxxxxxxxxxxxxx
  Sent: Mon, 28 Apr 2008 1:43 pm
  Subject: [Chrysler300] Oil talk

  I emailed Chevron this morning and got this response, thought the group
  would benefit. I have been using Delo by Chevron because my local Costco
  store carries it. It sounds like it has a bit more zinc (1300ppm) than
  Rotella (1200 ppm).

  Bob J

  _____ 

  From: Lube Tek Call Center [mailto:lubetek@xxxxxxxxxxx] 
  Sent: Monday, April 28, 2008 9:33 AM
  To: Bob Jasinski
  Subject: RE: Best oil for 1961 Chrysler 300G

  Thank you for your inquiry. Delo 400 LE 15W40 and 10W30 both have 1300 ppm
  zinc and meet API classification SM, so they will both give adequate
  protection for flat tappet cams.

  _____ 

  From: Bob Jasinski [mailto:rpjasin@xxxxxxxxxxx] 
  Sent: Monday, April 28, 2008 11:53 AM
  To: Lube Tek Call Center
  Subject: Best oil for 1961 Chrysler 300G

  I own a '61 Chrysler 300G with a high performance 413 with 2-4bbl carbs. I
  am concerned about the reduction in zinc in the new SM motor oils for gas
  engines. It is my understanding that diesel motor oils have continued to
  offer higher zinc levels, and I am planning on switching to these types. 

  What is the best Delo oil to use for gas engines? I live in the San Fran
  bay area and drive the car mostly in the summer and take it to Reno during
  that time, never in the winter. Discussions on my car club list server are
  warning users to be aware of the low levels of zinc in SM oils and are
  recommending adding a product to restore the zinc to the mix, with use of
  diesel oils a good drop in replacement.

  Thank you for your knowledgeable response.

  Bob Jasinski
  331 La Questa Dr.
  Danville, CA 94526
  925-831-9727 home
  925-366-0035 cell
  rpjasin@xxxxxxxxxxx


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