If this API ‘donut’ appears on a bottle of oil, inspect the label as this means the oil is a current spec API legal oil with an SL, SM, or SN rating. This means it contains roughly an 800 ppm concentration of ZDDP and is probably not a good choice for a flat tappet camshaft engine unless the valvetrain is completely stock—and even then this might be taking chances with lifter/cam durability. (Image/American Petroleum Institute)
On Friday, June 23, 2023, 7:58 AM, Zach Hietsch <zhietsch@xxxxxxxxx> wrote:
Any recommendations on oil filters. I have a 300B and want to put a spin on filter instead of the cartridge. I have the adapter but I am having problems narrowing down a filter that will suit what I have.This conversation is actually quite informative for me as I am getting the car running again and wasn’t sure what to use in terms of oil. My grandfather used 5W-30. Or atleast that’s what was in his breakdown kit. I never saw him actually change the oil.Any insight is greatly appreciated.ThanksZach HietschOn Jun 23, 2023, at 8:34 AM, dplotkin <dplotkin@xxxxxxxxxxxxxxxxxxx> wrote:John, did you happen to read the white paper I sent last week or maybe earlier this week written by Duke Williams? His analysis is similar to yours although he does not recommend mobile one specifically because he believes the zinc is necessary in sliding surface valve trains.Danny PlotkinSent from my Verizon, Samsung Galaxy smartphoneDo we really think each of theses guys has an oil refinery ? i have a bridge to sell .-------- Original message --------From: John Grady <jkg@xxxxxxxxxxxxxxxxx>Date: 6/23/23 8:21 AM (GMT-05:00)To: Michael James <chrysler300f@xxxxxxxxx>Cc: dplotkin@xxxxxxxxxxxxxxxxxxx, Tony Rinaldi <awrdoc@xxxxxxxxx>, Hank Hallowell <Hank@xxxxxxxxxxxxxxxxxxx>, guyztoys <guyztoys@xxxxxxx>, jfh4800 <jfh4800@xxxxxxxxx>, Dyke Ridgley <ridgleyracing65@xxxxxxxxx>, Scott T <scotttaylorsc@xxxxxxxxx>, Chrysler list server <chrysler-300-club-international@xxxxxxxxxxxxxxxx>, Drew Carl <drew@xxxxxxxxxxxx>Subject: Re: {Chrysler 300} motor oil--It is same the stuff in different bottles , why it works the same and so has advocates by brand . None are “ wrong”If you really look at the engineering in oils , Mobil 1 synthetic , or synthetic generally, came out of the severe duty that an airplane gas turbine needs, the difference is all the polymer chains in synthetic are made the same length . Natural oils vary all over the place . Consistent repeatable lubrication is the result .So despite all kinds of rain dance stuff , such as purple dye, Pennsylvania sources etc etc , Mobil 1 is the best oil if you want the best oil . Why it costs so much and is in aircraft engines, where there is extreme stress . It is engineered to be the best , Most of the other stuff is marketing hype.Related, I read a test , might have even been SAE , where they ran a 350 sbc in a Camaro until the oil showed loss of additives etc — for real -still ok but string to decline — not “recommendations “ to change it . Mobil 1 was still perfect at 18000 miles . Others had failed earlier .So we waste oil like crazy changing it all the time for nothing handing the oil co money . It turns black due to detergents holding junk in suspension as it was designed to do . Predictable performance vs temp comes fromthose engineered polymer chains.A better place to spend money is a real mopar oil filter , many others are junk . The reason it has to be good is modern oil change intervals (Toyota is 10 k? and synthetic ) combined with warrantee . Mopar is not motivated by profit on oil filters but by no warrantee claims on engines due to dirty or inadequate oil or poor filters .I saw the various filters cut open , you would not believe what is in some name brands that come from china now . As in roll of toilet paper . Mopar one was really good .Based on all this I use Mobil one 10-30 for 10 k miles , same $ over 10 k as other ways change filter too .This has coincidentally brought back some pretty sad 150 k mile V8 engines too , it cleans themup . lifters stop ticking etc after 10 k milesTwo 4.0 jeep daily drivers since 1997 , one went 320 k other now is at 250 . Both use zero oil over the 10 k . That i cannot believe !! but true .I am sold . I do put zddp in , sort of nothing to lose on that with mechanical liftersAnyway , what one engineer thinks ..JohnSent from my iPhoneOn Jun 22, 2023, at 9:51 PM, 'Michael James' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> wrote: Sidebar— I’ve read Rotella, although high zinc, has aggressive additives designed for diesel engines, that can be detrimental to our older engines. Anecdotal bobistheoilguy data but I’m not risking it.On Thursday, June 22, 2023, 8:33 PM, 'Michael James' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> wrote:
--Here is a handy quantitative chart on zinc.Why do you guys run such thick stuff? 20w, etc? Castro came out with this super cheap high zinc oil as well. (2nd link).On Sunday, June 18, 2023, 4:15 PM, dplotkin@xxxxxxxxxxxxxxxxxxx wrote:
All the oils mentioned are fine to use as they contain sufficient zinc and your cars are happy. For the engineering types among us is the attached article about oil for vintage Corvettes (whose needs are no different than our Hemi, B & RB mills.)
Danny Plotkin
https://groups.google.com/d/msgid/chrysler-300-club-international/1687122938.209623995%40apps.rackspace.com-----Original Message-----
From: "Tony Rinaldi" <awrdoc@xxxxxxxxx>
Sent: Sunday, June 18, 2023 11:35am
To: "Hank Hallowell" <Hank@xxxxxxxxxxxxxxxxxxx>, "guyztoys" <guyztoys@xxxxxxx>
Cc: "jfh4800" <jfh4800@xxxxxxxxx>, "Dyke Ridgley" <ridgleyracing65@xxxxxxxxx>, "Scott T" <scotttaylorsc@xxxxxxxxx>, "dplotkin" <dplotkin@xxxxxxxxxxxxxxxxxxx>, "Chrysler list server" <chrysler-300-club-international@xxxxxxxxxxxxxxxx>, "Drew Carl" <drew@xxxxxxxxxxxx>
Subject: Re: {Chrysler 300} motor oilI also use Brad Penn. Buy a case from Summit Racing and they will ship it free.Tony
On Sunday, June 18, 2023, 11:11 AM, Hank Hallowell <Hank@xxxxxxxxxxxxxxxxxxx> wrote:
Like Danny, I’ve used Brad Penn and ZR1 - both great w/zinc 20/50.My collection of internal combustion Mopars seem to happy.
Hank
On Jun 18, 2023, at 10:40 AM, 'guyztoys' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> wrote:I too vote for the AMSOIL Z-ROD, high zinc, high phosphorus formulation. Comes in 10W-30, 10W-40 and 20W-50. Right up there with the best. AMSOIL is an American founded, owned and operated company out of Superior, Wisconsin.Guy Morice
Sent from my iPhone
On Jun 18, 2023, at 9:30 AM, jfh4800 <jfh4800@xxxxxxxxx> wrote:Yes, but I use AMSOIL "Z-ROD" w/ the Zinc it comes in many viscosity "flavors" from 10W-30 up to 20W-50.John H.C & D CoupesSent from my Verizon, Samsung Galaxy smartphone-------- Original message --------From: Dyke Ridgley <ridgleyracing65@xxxxxxxxx>Date: 6/18/23 7:48 AM (GMT-06:00)To: Scott T <scotttaylorsc@xxxxxxxxx>Cc: dplotkin <dplotkin@xxxxxxxxxxxxxxxxxxx>, Chrysler list server <chrysler-300-club-international@xxxxxxxxxxxxxxxx>, Drew Carl <drew@xxxxxxxxxxxx>Subject: Re: {Chrysler 300} motor oilAnother vote for VR1.Dyke Ridgley
Ridgley Racing5500 Walmsley RdDecatur, IL 62521217-865-2300 p217-865-2309 f
--On Sun, Jun 18, 2023 at 5:36 AM Scott T <scotttaylorsc@xxxxxxxxx> wrote:I like Rotella and use it in some of my old cars. I like Valvoline VR1 “racing oil” as well for the zinc content. It’s a little more expensive but seems to perform well and do what the older motors need.Scott--
On Sat, Jun 17, 2023 at 9:48 PM dplotkin <dplotkin@xxxxxxxxxxxxxxxxxxx> wrote:Drew:This subject is hotly debated on a Corvette forum I frequent where many participants are engineers and former Big 3 employees.The consensus among them is Rotella 15W40 or its equivalent meets all requirements for mid century high compression sliding surface (flat tappet) engines. Though sold for Diesels it has sufficient zinc and is the most economical.I don't use it. I fall for the allure of oil formulas for old cars. I use Brad Penn 10W40 in everything and have for over 20 years. Did you ever see the pretty green color?Danny PlotkinSent from my Verizon, Samsung Galaxy smartphone---------- Original message --------From: 'Drew Carl' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx>Date: 6/17/23 7:34 PM (GMT-05:00)To: Chrysler list server <chrysler-300-club-international@xxxxxxxxxxxxxxxx>Subject: {Chrysler 300} motor oil--Looking for a 30 weight motor oil I can buy in bulk, at least by the gallon. My family has always run Pennzoil in all our old cars but it gets old buying it in cases of 6 quarts if I need to do multiple oil changes. I was considering Rotella T1 as it seems you can buy it in gallon jugs at least. Does anyone have any advice?
Drew Carl
Owner, eScorePhone: 724-288-6636
Email: drew@xxxxxxxxxxxx
Website: www.escoremx.com
Address: 1280 Henderson Avenue Washington, PA 15301
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