Sincy PYB removed moly...
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IMHO Moly is not a "must have" in most add packs these days.
No not necessary, but still very prevalent in many leading edge formulation such as the new Honda (Idemitsu) and Toyota 0W-20 grades which both contain a boat load of moly.
This helps answer why PYB can be sold so cheap. It is.
Originally Posted By: ottotheclown
This helps answer why PYB can be sold so cheap. It is.
PYB now uses a good shot of Borate Esters in it's formulation, and they aren't cheap. Just replaced one AW add for another.
Go drag you knuckles somewhere else!
This helps answer why PYB can be sold so cheap. It is.
PYB now uses a good shot of Borate Esters in it's formulation, and they aren't cheap. Just replaced one AW add for another.
Go drag you knuckles somewhere else!
Oil fight! oil fight! oil fight!
I like boat load of moly. In my opinion, its anti friction properties helps the engine run smoother especially during winter. One of the reasons why I have Red Line oil in my sump.
Originally Posted By: ottotheclown
This helps answer why PYB can be sold so cheap. It is.
How do you figure PYB is so cheap compared to other dinos? From what I seen it cost the same as Castrol, Mobil, Valvoline etc. Now Quaker State is sold cheaper. I'm not sure how they can do that.
This helps answer why PYB can be sold so cheap. It is.
How do you figure PYB is so cheap compared to other dinos? From what I seen it cost the same as Castrol, Mobil, Valvoline etc. Now Quaker State is sold cheaper. I'm not sure how they can do that.
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Originally Posted By: ottotheclown
This helps answer why PYB can be sold so cheap. It is.
CHEAP!? Cheap is when I bought oil for .35 a quart back in the day!
This helps answer why PYB can be sold so cheap. It is.
CHEAP!? Cheap is when I bought oil for .35 a quart back in the day!
well what I am about to say might be cancelled out by the fact I am now using HDEO...but for what it is worth:
A) I tried Max-Life (which has moly) and my 4.0 was not as smooth as with Pennzoil HM formula
B) MPG went down slightly with Max-Life
C) I have "heard" that moly can be corrosive to soft metals in engine bearings over time?
A) I tried Max-Life (which has moly) and my 4.0 was not as smooth as with Pennzoil HM formula
B) MPG went down slightly with Max-Life
C) I have "heard" that moly can be corrosive to soft metals in engine bearings over time?
Honda's and some other Japanese engines still use flat-tappet type valve lifters, so need the Moly. Kind of odd for modern engine design since the trend is toward low-friction engines, like Ford where they use roller lifters and therefore don't need the Moly so much.
Moly is not a must have in an oil I can agree with that! PP and PYB are very weak oils designed for short change intervals and are nothing to write home to Mom about but then again most SM oils are weak knee'ed and garbage in my mind.
Originally Posted By: JohnBrowning
Moly is not a must have in an oil I can agree with that! PP and PYB are very weak oils designed for short change intervals and are nothing to write home to Mom about but then again most SM oils are weak knee'ed and garbage in my mind.
dont leave anything out.. tell us all how you feel about it.
Moly is not a must have in an oil I can agree with that! PP and PYB are very weak oils designed for short change intervals and are nothing to write home to Mom about but then again most SM oils are weak knee'ed and garbage in my mind.
dont leave anything out.. tell us all how you feel about it.
Originally Posted By: modularv8
Honda's and some other Japanese engines still use flat-tappet type valve lifters, so need the Moly. Kind of odd for modern engine design since the trend is toward low-friction engines, like Ford where they use roller lifters and therefore don't need the Moly so much.
Unless you've been out of the technological front for some time, Gen 8 civics as well as fit comes with roller cams to take advantage of modern oil grades.
Q.
Honda's and some other Japanese engines still use flat-tappet type valve lifters, so need the Moly. Kind of odd for modern engine design since the trend is toward low-friction engines, like Ford where they use roller lifters and therefore don't need the Moly so much.
Unless you've been out of the technological front for some time, Gen 8 civics as well as fit comes with roller cams to take advantage of modern oil grades.
Q.
Aware of those engines along with their very tight oil clearances. Just generally, Honda tends to run these flat tappet engines more than anyone else. Our 2009 Odyssey V6 VTEC engine has them as well as the Accord, and their Acura cousins.
Anyway, the point is that OEM motor oil is formulated around their engine designs. So you see alot of Moly in Honda oil. I think when people want the "best" oil, they should get the OEM oil, Honda, Toyota, Motorcraft, and soon to be GM oil. These are designed and tested extensively on their engines. The rest are universal oils.
Anyway, the point is that OEM motor oil is formulated around their engine designs. So you see alot of Moly in Honda oil. I think when people want the "best" oil, they should get the OEM oil, Honda, Toyota, Motorcraft, and soon to be GM oil. These are designed and tested extensively on their engines. The rest are universal oils.
I don't know why Japanese cars just about all still have mechanical valve tappets/cam followers. It's hard to put a roller tip on the rocker when you have a valve adjustment screw there. I'm not sure how important a roller tip at the valve is though since they are eliminating the hydraulic tappet anyway. But maybe Japanese OEM oil uses more oil for some of the legacy engines that dont have roller valvetrain?
Originally Posted By: modularv8
The roller gliding over the cam is a alot smoother than the boundary layer lubrication that occurs with the flat tappet.
Yeah but I was referring to only the rocker tip to valve tip interface and weather that being a roller mattered as much.
The roller gliding over the cam is a alot smoother than the boundary layer lubrication that occurs with the flat tappet.
Yeah but I was referring to only the rocker tip to valve tip interface and weather that being a roller mattered as much.
There is no question that a good roller can set up is better for cam life than any flat tappet design.
But to me, the key fact is the actual loading - how much pressure are we talking about?
For non high performance regular street engines,
the loadings are so light that it won't matter. Modern oil will be just fine.
But to me, the key fact is the actual loading - how much pressure are we talking about?
For non high performance regular street engines,
the loadings are so light that it won't matter. Modern oil will be just fine.
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