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 Plotkin Sent from my Verizon, Samsung Galaxy smartphone -------- 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 from those 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 them up . lifters stop ticking etc after 10 k miles Two 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 lifters Anyway , what one engineer thinks .. John Sent from my iPhone On Jun 22, 2023, at 9:51 PM, 'Michael James' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> wrote:
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