Which of these would result in less IVD for GDI?
- Thread starter yowps3
- Start date
I'd say B, is there any actual correlation of NOACK to IVD, I thought most of the oil that finds it's way into the PCV and gets burnt onto the back of valves is caused by oil mist created in the crankcase not high temperature evaporation.
Impossible to say.
What about the blow by products?
NOACK measures evaporative losses which I thought were linked to IVD?
Hence why I created this thread.
YES
Some people like to try and make that correlation but it has not been proven to be correct. A low SAPS oil such as Castrol Edge 5W-30 is formulated for this issue.
Noack limits as part of several manufacturer approvals exist to reduce the likelyness of deposits
and that - at least to my understanding - includes IVD. That's why - if in doubt - I'd go with A.
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and that - at least to my understanding - includes IVD. That's why - if in doubt - I'd go with A.
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On a sidenote, it's Noack, not NOACK, since that's the surname of the guy who invented the test.
Lower SAPS, I believe is referenced in the FSI Patent VW has, as it relates to the intake valve buildup
Great suggestion. However, according to the Castrol's website, Castrol Edge 5W30 black bottle has .78% SA. Wouldn't that fall under Mid-SAPS?
Does SP/GF6 covers IVD prevention? I see LSPI and Timing Chain wear.
Gokhan wrote a lot about this topic. I came away uncertain. Lubrizol was the originator or marketer of Low SA = lower IVD's. But many have disputed that claim.
There is a lot of chemistry in a bottle of oil so it's very difficult to say unless there were tests developed specifically for IVDs. I've seen that LZ study before as its been posted many times here and other sites.
Oddly enough, Valvoline's Modern Engine oil had a slightly higher Noack than their standard synthetic, which to me suggests it is more than Noack and involves other chemistry to reduce IVDs.
Some have suggested oils with selected ester types or higher concentrations of POE can help mitigate IVD's being they are good solvents. So when the oil vapors or mist come in contact with the IVD it can clean them.
I believe there was something unique with Valvoline Modern Engine. It smelled different and had a significantly higher price tag, which honestly was probably due to the advanced chemistry they were using in it to achieve the results they claimed. It was poorly marketed though and overpriced for the glorious Walmart shoppers who would run to China to save $.10 qt on oil.
There is a lot of chemistry in a bottle of oil so it's very difficult to say unless there were tests developed specifically for IVDs. I've seen that LZ study before as its been posted many times here and other sites.
Oddly enough, Valvoline's Modern Engine oil had a slightly higher Noack than their standard synthetic, which to me suggests it is more than Noack and involves other chemistry to reduce IVDs.
Some have suggested oils with selected ester types or higher concentrations of POE can help mitigate IVD's being they are good solvents. So when the oil vapors or mist come in contact with the IVD it can clean them.
I believe there was something unique with Valvoline Modern Engine. It smelled different and had a significantly higher price tag, which honestly was probably due to the advanced chemistry they were using in it to achieve the results they claimed. It was poorly marketed though and overpriced for the glorious Walmart shoppers who would run to China to save $.10 qt on oil.
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C)
More frequent oil changes and can of Gumout/CRC/Seafoam/ *insert your favorite brand* intake spray cleaner every 10-20k.
Low VII content and perhaps type of VII affects Noack, most probably resulting in lower Noack.
So it remains the same, lower Noack is prefered.
And again, it's Noack, not "NOACK".
So it remains the same, lower Noack is prefered.
And again, it's Noack, not "NOACK".
