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Moly in oil?


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Been reading on some other forums about moly being in oil and how its good, but some highly respected oils have none! What is Moly (Molybdenum I believe) and why do some oils have a lot of it and some have none, also which would you rather have, moly or none?
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I spend some spare time there just reading away also. Just feel lost sometimes though, seems like I need to start at the beginning and read up until now but that would take forever.

 

It all started because I am thinking about changing brands. Right now I use Castrol GTX but its $1.75 or more per quart. Since it is non syn I was thinking about going to a oil cheaper in price like Exxon Superflo. But this is where the moly part starts, Castrol has shown to have moly while Superflo doesnt. I am trying to decide whether to stick with the Castrol or go with the Superflo. They have also said on that site that Superflo is really good up until about 4000 miles then it drops off. I change it at 3000 so no biggie there just the moly is all thats different. If I remember correctly Amsoil had no moly either, wonder if its important or not?

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It all started because I am thinking about changing brands. Right now I use Castrol GTX but its $1.75 or more per quart. Since it is non syn I was thinking about going to a oil cheaper in price like Exxon Superflo. But this is where the moly part starts, Castrol has shown to have moly while Superflo doesnt. I am trying to decide whether to stick with the Castrol or go with the Superflo. They have also said on that site that Superflo is really good up until about 4000 miles then it drops off. I change it at 3000 so no biggie there just the moly is all thats different. If I remember correctly Amsoil had no moly either, wonder if its important or not?

 

I use Mobil One 5w30 or 10w30. I run about between 5,000 and 7,000 miles on Mobil One. I want to try Redline but it cost so much. You are right, Amsoil has no moly in it. I think Amsoil is not much better than other syn oils like Mobil One and Redline.

 

If i'm you i would stay with Castrol GTX.... Thats a great dino oil.

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I use Mobil One 5w30 or 10w30. I run about between 5,000 and 7,000 miles on Mobil One. I want to try Redline but it cost so much. You are right, Amsoil has no moly in it. I think Amsoil is not much better than other syn oils like Mobil One and Redline.

 

If i'm you i would stay with Castrol GTX.... Thats a great dino oil.

At 3k oil changes any of the brand name oils are fine. I like to read on that site as well. You can learn a lot not to mention seeing all the used oil analysis and how the different brands hold up.

 

A friend of mine went 350k on his toyota SR5 with the V6 before the cam wore out. All he ever used was Fram flters and Castrol GTX.

 

Synthetics are for the extended drains and or convenince of not haveing to change your oil as often if you put a ton of miles on your car in short time.

 

I learned a lot on that site about TBN. That is the thing to watch especially on extended drains. My wife's venture had six months worth of driving on it with 12k miles on the oil and the TBN was down to 5. My understanding is you don't want it to go much lower than that considering it started out at 12. That was running the 0w-30 Series 2000 Amsoil. Now I'm running the 10w-30 in it and going to see how well it is holding out. Doing the oil analysis is a good thing on the Ventures, at least the newer ones from what I'm told. They have a problem with the intake gasket leaking antifreeze into the engine. Not a good thing. So the analysis can let you know ahead of time, (hopefully,knock on wood) before it gets bad.

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I dont deny that Synthetics dont work, I just like changing at 3000 so I just put dino in, and I am sure it surpasses the engines needs changing at 3000 miles so synthetic wouldnt be advantageous.

 

I was mainly wondering about switching from a dino oil with moly to a dino oil without. Amsoil is highly respected but has no moly, wonder if there is other stuff in there that makes up for it or is it lacking some performance that other oils have. I am not thinking about using Amsoil because I want to stick with dino but am wondering if the dino oils with no moly have other additives that make up for it, and if moly is really all that important to begin with! Guess more tests over the years will prove something! :cool:

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Reading over the used oil analysis on Bob's site is one way of keeping up with the different brands and how well they hold up in the real world. It is perfect for helping to choise which oil to go with by how well it performs. There is deffinatly a ton of information on that site and I can spend hours reading on it. :cool:

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  • 3 weeks later...
About this moly stuff, I used to get it at J. C. Whitney but they don't sell it any more. Anyone know where to buy it?

If you got to bobistheoilguy.com you can ask about the moly. I think there is an individual on there that sells schaffers moly. It is a really good oil also but like Amsoil not in the average store.

 

Bob is doing a filter study on there now. It is interesting to see how it is turning out.

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Today at work i went through an oil analysis class. We have specific machinery at work oil sampled on a regular basis.

 

Moly in the oil = alloy metal or lubricant additive to decrease the friction between wearing surfaces. May also indicate piston ring wear.

 

Let me know if you need any other help. I have a pretty detailed book on what the different trace elements found in the sample mean

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Today at work i went through an oil analysis class. We have specific machinery at work oil sampled on a regular basis.

 

Moly in the oil = alloy metal or lubricant additive to decrease the friction between wearing surfaces. May also indicate piston ring wear.

 

Let me know if you need any other help. I have a pretty detailed book on what the different trace elements found in the sample mean

:thumbs:

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