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Originally Posted By: SonofJoe
Let's see if this helps...
Some US PCMOs contain overbased Sodium Sulphonate. It's basically a cheap detergent. I might be wrong but I doubt if it does much other than mop up acid. I don't know but I suspect it was used simply to create a point of marketing differentiation.
Moly exists in many forms. Most people know about Molybdenum Disulphide which is a solid lubricant that functions a lot like graphite. However most Moly's in engine oil are in oil soluble form such as Molybdenum Dialkyl Dithio Carbamate (MoDDC).
Oil soluble Moly's are a bit like ZDDP in that they are true multi-functional additives. They're good for wear, good for oxidation control & good for engine deposits. They are also one of the few friction modifiers that actually delivers provided you add enough of it (around 1000ppm Mo in oil or 1%-ish MoDDC).
However Moly's are not without their problems. The biggest is cost. I've been away from things to know for sure but I'd guess that Moly is about ten times the cost of ZDDP on a metal in oil basis! This is hugely significant when you realise that whilst additive might only make up say 10-15% of an oil by mass, they roughly contribute about 40-50% of the overall cost of the oil.
In most global engine oil markets, Moly is used at relatively low treat rates either as a supplementary AO or AW additive. The only place you will find Moly used to its full potential is Japan. However you do need to understand that Japanese prices for engine oils are eye-wateringly high and are way beyond what other markets would tolerate.
PS, I tried to pour Moly on one of Santa's reindeers once. Sadly it died..
Excellent information! So to be clear it looks as if the moly content in oils is really not enough to proved the benefits this additive is supposed to provide? Is that what you're saying?
And back to the sodium, you're saying it's really just a cheap detergent, but I read in here that it is a metal. And if it's just a detergent, then what is the additive that provides engine/metal wear and protection in a product like Valvoline? Calcium? Because there's very little boron in it as well (and I thought boron was another anti wear additive).
Let's see if this helps...
Some US PCMOs contain overbased Sodium Sulphonate. It's basically a cheap detergent. I might be wrong but I doubt if it does much other than mop up acid. I don't know but I suspect it was used simply to create a point of marketing differentiation.
Moly exists in many forms. Most people know about Molybdenum Disulphide which is a solid lubricant that functions a lot like graphite. However most Moly's in engine oil are in oil soluble form such as Molybdenum Dialkyl Dithio Carbamate (MoDDC).
Oil soluble Moly's are a bit like ZDDP in that they are true multi-functional additives. They're good for wear, good for oxidation control & good for engine deposits. They are also one of the few friction modifiers that actually delivers provided you add enough of it (around 1000ppm Mo in oil or 1%-ish MoDDC).
However Moly's are not without their problems. The biggest is cost. I've been away from things to know for sure but I'd guess that Moly is about ten times the cost of ZDDP on a metal in oil basis! This is hugely significant when you realise that whilst additive might only make up say 10-15% of an oil by mass, they roughly contribute about 40-50% of the overall cost of the oil.
In most global engine oil markets, Moly is used at relatively low treat rates either as a supplementary AO or AW additive. The only place you will find Moly used to its full potential is Japan. However you do need to understand that Japanese prices for engine oils are eye-wateringly high and are way beyond what other markets would tolerate.
PS, I tried to pour Moly on one of Santa's reindeers once. Sadly it died..
Excellent information! So to be clear it looks as if the moly content in oils is really not enough to proved the benefits this additive is supposed to provide? Is that what you're saying?
And back to the sodium, you're saying it's really just a cheap detergent, but I read in here that it is a metal. And if it's just a detergent, then what is the additive that provides engine/metal wear and protection in a product like Valvoline? Calcium? Because there's very little boron in it as well (and I thought boron was another anti wear additive).
