Synthetic Oil

Oil of Choice

  • Castrol Syntec/Edge

    Votes: 233 8.4%
  • Royal Purple

    Votes: 325 11.7%
  • AMSOil

    Votes: 396 14.3%
  • Valvoline Synpower

    Votes: 160 5.8%
  • Mobil 1

    Votes: 992 35.9%
  • Other

    Votes: 660 23.9%

  • Total voters
    2,766

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Hemi395

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I misunderstood,

I thought you were sayin you pulled the plugs, applied A.S. And re-installed...[emoji1787]

I was hoping you were not crazy [emoji23][emoji23]


Sent while firmly grasping my redline lubed RAM [emoji231]
LOL well I am crazy but not THAT crazy [emoji23]
 

U&A

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doing my plugs this weekend as well. im @ 74k miles. swivel socket, plug gapper and torque wrench should be here Wednesday. ngk laser iridium 92145 plugs are already here..im hoping i can get up into the engine bay like he did. with a 4" lift and rather short arms....reaching from a step ladder would suck. hoping plugs fix the shudder i feel ince in a while when shifting.

Your taking out copper core plugs and putting in Iridium...?


Sent while firmly grasping my redline lubed RAM [emoji231]
 

Burla

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they have after market coils that can bump up ponies, but I'm wondering if it will shorten life of plugs? Looks like you have to gap to spec as well. I'm not in position right now, neary 4-5 hundred bucks and I need to replaster the pool. new coils make 91 octane a must? I wouldn't mind that anyhow, costco has 87 and 91 no 89, that would make it official, just run 91.
 

tidefan1967

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they have after market coils that can bump up ponies, but I'm wondering if it will shorten life of plugs? Looks like you have to gap to spec as well. I'm not in position right now, neary 4-5 hundred bucks and I need to replaster the pool. new coils make 91 octane a must? I wouldn't mind that anyhow, costco has 87 and 91 no 89, that would make it official, just run 91.
Isn't 91 like $5 bucks a gallon in California? Hell I don't even want to buy 89 when it goes over $2.50-.60 here! Hell if anything I would think the newer coils would make it more efficient and it would run better on lower grade gas.
 

16RamHemi

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they have after market coils that can bump up ponies, but I'm wondering if it will shorten life of plugs? Looks like you have to gap to spec as well. I'm not in position right now, neary 4-5 hundred bucks and I need to replaster the pool. new coils make 91 octane a must? I wouldn't mind that anyhow, costco has 87 and 91 no 89, that would make it official, just run 91.

i have not put a ton of time into reading up on this, but the bit i have done, i thought the concensus was that these coil upgrades were not worth the coin?
 

Burla

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Isn't 91 like $5 bucks a gallon in California? Hell I don't even want to buy 89 when it goes over $2.50-.60 here! Hell if anything I would think the newer coils would make it more efficient and it would run better on lower grade gas.

I guess I can tune the hemi down to 87, but I never heard of anyone doing that. I just drive less.
 

U&A

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I thought it was '14 up that had the iridium compatible coils but I'm not positive.

You could be right. I have no idea if they’re compatible or not and I did not know it was possible to run both.


Sent while firmly grasping my redline lubed RAM [emoji231]
 

Hemi395

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I believe it was midyear 2013 they switched to irridium plugs. My 2013 has a build date of 12/12 so it has the copper plugs but there are people with 13s that had irridium plugs.

Not sure if the HD 6.4s are different tho...
 

joshuaeb09

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Interesting. My part number in the manual and all data are coppers

I have a 2016


Sent while firmly grasping my redline lubed RAM [emoji231]

My 2017 SRT 6.4 calls for Platinum's instead of Iridums like the 5.7 in my Ram.

Interestingly enough I don't see an NGK copper listed in their application guide for the 6.4 in the truck or a platinum. Instead they list an Iridium with an "OE Equivalent" design along with some of their other plugs like the IX and HX. The OE Equivalent iridium has a different part NO then the stock 5.7 Iridiums, but the other listed plugs are the same which is odd. I wonder if you could pull the part number off the coil pack's on your 6.4 so we can compare against the Iridium spec'd 5.7 and the Platinum spec'd SRT 6.4.
 

Burla

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I believe it was midyear 2013 they switched to irridium plugs. My 2013 has a build date of 12/12 so it has the copper plugs but there are people with 13s that had irridium plugs.

Not sure if the HD 6.4s are different tho...

Which do you prefer, copper or iiridium?
 

Zack02

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Interesting. My part number in the manual and all data are coppers. I have a 2016

I know last time, I said I wasn't doubting you, but I am doubting you 100% lol...The difference is an "i": LZFR5C-11 vs LZFR5CI-11. That's how coppers got into my '14 in the first place :(

It's possible to run both. I personally have done it, in fact, I just changed them 1.5 months ago... But the coil pack's are different part numbers. My coppers came out extremely white, so either, my truck is running lean, OR they were getting hot. Hot makes sense to me, since it takes more to fire iridium over copper. Less resistance and more heat.



I guess I can tune the hemi down to 87, but I never heard of anyone doing that. I just drive less.

Or you could just run 87... LOL
 

HammerHead

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Can anyone clarify oil density? I understand density and viscosity are separate properties but looking at the stat sheets of various oil’s their densities are different? Do any of you consider oil density when making your own selection? And I’m sure density changes with temperature so I find all this very confusing?
 

joshuaeb09

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they have after market coils that can bump up ponies, but I'm wondering if it will shorten life of plugs? Looks like you have to gap to spec as well. I'm not in position right now, neary 4-5 hundred bucks and I need to replaster the pool. new coils make 91 octane a must? I wouldn't mind that anyhow, costco has 87 and 91 no 89, that would make it official, just run 91.

I've played with hotter COP's before on Fords. If you get good ones, like the DUI cops, they'll output a hotter voltage, but without opening the gap it doesn't do much for you. If you get crap like the Granatelli's or the Accel/MSD then you'll be replacing coils like crazy (1st hand burns on those). Ultimately they just provide more voltage to arc across a wider gap, but with a stock gap the overall power output to the plugs won't change much. They will help if the stock coils aren't providing the best spark they can, but once you hit enough arc voltage then the equation transitions to amperage which is going to be dictated by the plug's overall resistance. Same resistance, same overall power output once the arc strikes.

I've been thinking about combining the SOS COP's with Brisk Silver plugs in the Challenger to run a wider gap, like .065, to get some more power out of it. The hotter spark with silver plugs would mean a rather short life, but honestly that doesn't matter much to me since that car averages 5k or less per year.

Now on the Ram I'll probably swap from Iridum to the new Ruthenium plugs at stock gap as they should have slightly better ignitability while still giving a good service life since I really don't feel like doing 10k or shorter plug swaps on the daily driver.
 

U&A

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This Spark plug talk is interesting. Guess I better get this figured out for this weekend.

I’m going to call the dealer and ask them what part number plug they would put in my truck.


Mine says LZFR5C-11G

NGK website has one plug only for the part number but it does not have the “G” at the end






Sent while firmly grasping my redline lubed RAM [emoji231]
 

joshuaeb09

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Can anyone clarify oil density? I understand density and viscosity are separate properties but looking at the stat sheets of various oil’s their densities are different? Do any of you consider oil density when making your own selection? And I’m sure density changes with temperature so I find all this very confusing?

Density plays a role in the viscosity of an oil at a given temperature outside of any modifiers like VII's, which increase viscosity on other principles than just fluid density as they are actually less dense when they expand. However the density change is not a 1:1 viscosity change as noted by the 2nd link's set of charts. A prime example of this is the chart for the straight 30 weight. Pretty much the only numbers you should be concerned with are the viscosity at a given temperature as the density will also either change differently or have a different impact depending on the nature of the base oil and any modifiers like VII's.

https://www.engineeringtoolbox.com/...cant-volume-correction-ASTM-D1250-d_1943.html
https://wiki.anton-paar.com/en/engine-oil/
 

U&A

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Honest question,

Has anyone ever known “all data”to have incorrect part numbers or information?

It’s illegal to post pictures from “all data”. So these are from “Fall Fata”. Just to be clear as mud. This is for my truck (2016) with a 5.7 or a 6.4.



0c4ab562f0f531d90869d7ea79178019.jpg



Sent while firmly grasping my redline lubed RAM [emoji231]
 
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