1. duster star

    duster star Member

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    I have just picked up a 1973 340 duster high performance engine what oil should i use i have heard it will need a zinc additive is that so thanks
     
  2. QuickDart360

    QuickDart360 Well-Known Member

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    Valvoline VR-1, Schaeffer, or Brad Penn come to mind. These oils have the zinc needed for this 340.
     
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    • dadsbee

      dadsbee FABO Gold Member FABO Gold Member

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      oilpenngrade 002.JPG
       
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      • ch1ll

        ch1ll FABO Gold Member FABO Gold Member

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        Amsoil hotrod oil or what they recommend, just call the tech line. Best oil made bar none.
         
      • Plymouth 65

        Plymouth 65 Floorable Deplorable

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        Mobile or Valvoline 10W-30 for me. 65"
         
      • dartfreak75

        dartfreak75 Restore it, Dont part it! FABO Gold Member

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        I run lucas classic car oil has zinc already in it no additional additives needed.

        41GNQ3e1DjL._AC_SY580_.jpg
         
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        • Joey4speed

          Joey4speed FABO Gold Member FABO Gold Member

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          VR-1.
           
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          • Murray

            Murray FABO Gold Member FABO Gold Member

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            Does it have a roller cam?
             
          • duster star

            duster star Member

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            yes
             
          • pittsburghracer

            pittsburghracer FABO Gold Member FABO Gold Member

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            Kendal oil, Brad Penn, and now called Penn Grade user for well over 40 years. Same oil different name. Zero complaints out of me.
             
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            • DentalDart

              DentalDart Well-Known Member

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              What ever cheap full synthetic 10W-30 oil you desire and a little bottle of zinc additive. I don't even remember the brand in my 340 right now, it was like 30 bucks on sale. Before that I ran VR1... don't notice a difference in how it runs and I daily drive my car.

              Or.. spend 60+ dollars on an oil change. :thumbsup:

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            • RustyRatRod

              RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

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              This ^^^^^. It's affordable and already has ZDDP additive mixed in.
               
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              • RustyRatRod

                RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

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                With a roller camshaft, you can basically run any oil on the shelf. No need for the higher ZDDP content. That is just for flat tappet camshafts.
                 
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                • Dartnut

                  Dartnut Don't hate me because i'm beautiful

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                  What are the engine specs.?
                  The '73 engines didn't have roller cams in them from the factory.
                  If it's been converted to one, then a good synthetic oil like Amsoil Z-Rod is what I would recommend.
                   
                • Ricks70Duster340

                  Ricks70Duster340 Child of the King FABO Gold Member

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                  Z-Rod oil, 20w50
                   
                • ir3333

                  ir3333 Well-Known Member

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                  any oil...Penzoil 5W30 would be fine!
                   
                • WV64Signet

                  WV64Signet FABO Gold Member FABO Gold Member

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                  After reading through here and based upon local availability, decided to go with Valvoline VR-1 and a WIX filter. Local NAPA store was able to hook me up.

                  20210906_105827.jpg
                   
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                  • Johnny Dart

                    Johnny Dart Well-Known Member

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                    Off topic, but why is your alternator bracket upside down ?
                    And while I'm at it, you might want to lose the glass fuel filter, and air cleaner.Both have been known to catch on fire.

                    Back to the regularly scheduled programming.
                     
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                    • WV64Signet

                      WV64Signet FABO Gold Member FABO Gold Member

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                      Well, honesty I'm not sure @Johnny Dart . Just bought the car and I'm a Mopar rookie so feedback is most welcome... took me a while to figure out why the PCV Valve was forward on a 64... figured out that the engine is actually an 81... :lol: but it's had a bunch of work done on it.

                      Yes. .... I've got a Holley air cleaner on order after reading @halifaxhops and others comment.

                      I'm a sponge... love the site and all the knowledge here.

                      :thumbsup:
                       
                      Last edited: Sep 14, 2021
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                      • 12many

                        12many Well-Known Member

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                        Warren brand or store brand carried @ Dollar General, Family Dollar, or any store brand from Autozone, Advance Auto, Oreilys, and Walmart Supertech brand. Save money! Then learn to control the insuring mental torment, the anguish, constant fretting, the scorn and ridicule by others for using cheap oil.....
                        OR,
                        buy the most expensive heavily marketed and hyped oil out there with all the good stuff in it, the more the better, enjoy the calming placebo effect, gain the approval of your peers, rest easy knowing you’re using the best oils available. Oil scmoil:lol:
                         
                      • 3forty

                        3forty "Raw Power"

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                        I run 10w-40 carquest oil and add 4oz of zinc additive in my 340 engine.
                         
                      • WV64Signet

                        WV64Signet FABO Gold Member FABO Gold Member

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                        Done...

                        See, he can be taught. :thumbsup:

                        Working on the fuel filter

                        Thanks guys

                        20210917_144246.jpg
                         
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                        • Johnny Dart

                          Johnny Dart Well-Known Member

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                          Now yer squirting putty. :)
                           
                        • oldmodlover

                          oldmodlover Well-Known Member

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                          Another " constructive criticism" if l may.
                          You are almost out of adjustment on alternator belt. You do not have to do this today, but may want to consider getting a belt that is about 1/12" - 2" shorter.
                          Start adjustment close to motor as possible.
                          New belts DO stretch. A belt will get longer. Never shorter. ( Unless it brakes. Duh)
                          It will not " flex" / vibrate as much. Also a little less likely to "squeal".
                          Wipe down pulley grooves with brake clean or lacquer thinner to remove residue.
                          I usually even take a piece of 180 grit sandpaper to slightly " roughen up" the grooves before installing new belt.

                          Been doing this method for years on dirt and asphalt race cars. Never had a belt issue since started doing it.
                          No reason why 5 minutes of extra work that it won't work on a street car as well.
                          And yes, l do it in my street cars.

                          You are learning. That is a good thing. Keep it up.
                           
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                          • WV64Signet

                            WV64Signet FABO Gold Member FABO Gold Member

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                            Thanks much... Loving the feedback and the tricks of the trade.

                            @Johnny Dart PM'd me earlier on the alternator adjustment and belt length to achieve greater efficiency... it's on the list with the fuel filter. :thumbsup:
                             
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