Synthetic Oil

Oil of Choice

  • Castrol Syntec/Edge

    Votes: 236 8.5%
  • Royal Purple

    Votes: 327 11.8%
  • AMSOil

    Votes: 400 14.4%
  • Valvoline Synpower

    Votes: 160 5.8%
  • Mobil 1

    Votes: 994 35.8%
  • Other

    Votes: 662 23.8%

  • Total voters
    2,779

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misuracaf10

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My only question is: Do you tow?
If so? Are your loads med/heavy loads & for how many miles at a time.

Only real enemy of gear oil is heat/shearing/water contamination.

(Do you tow in 4WD? If not? Stick with the factory recommendations for the front).
(If you never tow at all): Just a daily driver for the rearend I would do my service every 50-75K miles.
If you have a Limited Slip: I would definitely do a service before or around the 40-50K mark.
(Clean/Fresh oil is a Anti-Slips best friend).

If you tow often & for quite long periods of time in both 4WD & 2WD my rule of thumb is do your service between 25-35Kmiles.

If you tow a boat & your rearend gets submerged in water often? I would do my service every 25K miles.

Your using one of the highest quality gear oils created: Your in very good hands!

Once again the SyN Disclaimer: Only My Simple Logical Opinion!

It sounds very complicated but it’s really not! Just don’t neglect your Differentials due too being Lazy!

ZF has made the service for both the front and rear differentials of the 1500 very easy no excuse not to do it now.
My ram is a different story: I’m having to install a new rearend cover to make the service much easier and faster. (30min Tops)

I honestly think (most owners) have no clue exactly how hot the gear oil as well as the rearend gets (while towing a medium or heavy load during the summer on asphalt for Long periods of time).

I do not tow and I have the 3.92 limited slip. I mostly am driving highway. I thought the factory on the 14 was like 15,000 miles or something but that seemed excessive to me especially with redline. And I’ve only used the 4wd in the deep snow or ice and a once or twice a year off-road.


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SyN

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Might think about 35-50K on the rearend & 45-60K on the front
You will have no issues while using RL. (Great Choice by the way)

If I remember correctly the transfer case as well as the front differential is constantly turning so that fluid is constantly getting heated up and cooled down. Shearing is constantly happening even though there’s not really a large load on the gears or the oil.
Just something to think about: it will never hurt to change the fluid early.

Good Luck!
 
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Burla

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You can send those gear fluid samples in to blackstone and I doubt they ever show the fluid is blown. The one thing that happens in gears is that if they are out of tolerance even a little, wear goes up exponentially as in Iron. I believe the "iron" numbers that Blackstone recommends gear fluid to be changed is very high. The rub, if the gears are out of tolerance and the iron is way up what would you do anyway? Nobody is going to change gears because they get a 1500ppm iron reading on a uoa.

Interval on Redline gear fluid, whatever you want it to be. If you want to be safe, 50 or 60k, if you want to push it farther, blackstone will likely agree. Biggest threat to gears if you are running redline, what the magnet says. Likely the fluid wont be broken down unless you have an issue, in which case that isn't on the oil, but yes new oil can prolong that situation. But if you have shavings rolling around, you want to service that. I haven't looked, does the stock cover have a magnet you can inspect? I was planning on doing it last summer, but postponed that til this summer, so I haven't even looked.

Sometimes those stock magnets don't last either, another issue.

If you tow heavy, always change your fluids at a safe range.
 
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[email protected]

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But for real, someone needs to figure out a damn catch can for the 6.4! I saw charonblk’s post of a 6.4 intake runner after 40k! Talk about ******** build up in there!


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Yep agreed. Pulled mine of 22,000 miles to install 87mm Moes. And mine was dirty as f--k
 

Rampant

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They are just preparing us for when they change it over to DI.
 

Rampant

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3rd storm in 3 weeks, on the generator once again
Dang man, it snowed all night and morning here, but it barely stuck because the temps hovered right around freezing. Take care of yourself & the fam.
 

Burla

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I posted this from other thread, machinelube had this. Notice the electrical current thingy.

DaimlerChrysler Corporation Flexible Service System
DaimlerChrysler’s version of the oil monitor is called ASSYST in Europe and the Flexible Service System (FSS) in the United States. Like GM’s sensor, the FFS uses a computerized system to track multiple engine operating conditions. From research on oil quality through the span of an engine’s life, Daimler discovered that the breakdown in oil is determined by such factors as driving habits (frequent short trips vs. long trips), driving speed and failure to replenish low oil levels. Therefore, the FSS monitors time between oil changes, vehicle speed, coolant temperature, load signal, engine rpm, engine oil temperature and engine oil level. It uses this information to determine the remaining time and mileage before the next oil change and it displays the information in the vehicle’s instrument cluster.

In addition, Daimler discovered that oil degradation is correlated directly with its ability to conduct electric current. Therefore, Daimler has fitted V-6 and V-8 engines with a digital oil quality dielectric sensor, that is mounted above the oil pan along with an analog oil level sensor. This sensor measures changes in capacitance, which effectively is a proxy for the amount and type of contaminants and oil degradation products present in the oil. An increase in dielectric constant (less resistance to electrical flow) indicates oil contamination and degradation.
 

Rampant

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I just saw this at the local parts store. Has anyone else seen/used it? Interesting.2100d539283db364b4d09ef6cb7c5003.jpg

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SyN

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Ramp: Believe it or not I just seen this product on Amazon and added it to my liqui Moly list.
I actually thought about ordering a can & adding it to my sons 5.3L for his summer OCI.
I do believe he is approaching 170,000 miles & the engine uses no oil between OCI.

I only wonder if it is just a larger can of this product?

3EA9E791-D9E8-4EC4-8922-0A2C710F7C4F.jpeg

500ML compared to 300ML
 
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Hemi395

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Dang man, it snowed all night and morning here, but it barely stuck because the temps hovered right around freezing. Take care of yourself & the fam.
Thanks man. I've had this generator for 5 years and have never lost power long enough to warrant starting up. These storms are getting old real quick...
 

Rampant

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Never have seen it, which store was it at ?

Autozone.

Ramp: Believe it or not I just seen this product on Amazon and added it to my liquid Moly list.
I actually thought about ordering a can & adding it to my sons 5.3L for his summer OCI.
I do believe he is approaching 170,000 miles & the engine uses no oil between OCI.

I only wonder if it is just a larger can of this product?

View attachment 122650

500ML compared to 300ML

I just put the "regular" MoS2 in my Yukon's 5.3 last week with 240k miles. I've only driven it a couple times and it coincidentally developed an exhaust manifold leak just after replacing the entire cooling system.

I just replaced all the bushings, ball joints, springs, struts, and end links on my daughter's Soobie over the past couple days, so I haven't had a chance to check the Yuk out yet. I can't tell if it still has the light startup bottom-end knock it had when cold because of the exhaust leak. It's next in line.


Thanks man. I've had this generator for 5 years and have never lost power long enough to warrant starting up. These storms are getting old real quick...

A generator is one of those things we all take for granted until you actually NEED it. One time. That's all it takes. After that, we take care of it like it's made of gold.
 

U&A

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3rd storm in 3 weeks, on the generator once again

Wow cory. I feel for you. Power outages take a toll on you being everything in our homes revolve around it. Im sure you are sick of it by now but on the other hand you have the routines down pat and will make new plans when power is back on.

Good luck to you sir

One more reason i am installing a new super efficient wood stove this summer. Just finished splitting my first cord harvested from my woods and its been 2 weeks and 2 days now. Mixture of maple, oak and hockey. Just 3 more cords and ill be set for a solid 6 months of 24/7 wood stove...... then i get started on wood of the following year.
 

huntergreen

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Wow cory. I feel for you. Power outages take a toll on you being everything in our homes revolve around it. Im sure you are sick of it by now but on the other hand you have the routines down pat and will make new plans when power is back on.

Good luck to you sir

One more reason i am installing a new super efficient wood stove this summer. Just finished splitting my first cord harvested from my woods and its been 2 weeks and 2 days now. Mixture of maple, oak and hockey. Just 3 more cords and ill be set for a solid 6 months of 24/7 wood stove...... then i get started on wood of the following year.


Looks like steel stove. I prefer cast iron for a nice even heat. No need for a blower.
 

U&A

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I dont like cast. Steel is safer IMO. It handles extreme Heat fluctuations much better/safer.

To each his own my friend.

But im a welder.... so l like steel.
 

huntergreen

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You might want to check out cast iron Woodstoves and compare them to the steel stove your looking at. Just my 2 cents.
 

U&A

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Already have. Thank you sir. Cast vs steel will be an ongoing argument until the end of man. Just like oil.
 

R.L.K.

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Already have. Thank you sir. Cast vs steel will be an ongoing argument until the end of man. Just like oil.
wait. , What. .umm ..oil ??? Listen man Oil surly doesn't warrant any arguments ....GOSH oil is just oil man [emoji106][emoji106][emoji16][emoji44]

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