VW 508 and api sp spec for lspi

[Jetta03]

Thx for all the replies, the consensus seems to be that lspi isn't an issue to be concerned about here, which is valuable to know. re: 508 vs 504 spec I've done an oil analysis on my last 508 oil change and blackstone reports all is normal, although I do see the occasional small silver spec in the oil filter at 50000 km. Perhaps will try 504 spec for the next oil change just for ****s and giggles.

Thx much

 

[kschachn]

Calcium has a far greater influence on LSPI than ZDDP does, at least when Ph is in the typical range of 600-900 ppm. The euro oils have only ~100 ppm more Ph than the API oils, which won't make a big difference.

What is Ph? Do you mean phosphorus, "P"?

 

[TiGeo]

Thx for all the replies, the consensus seems to be that lspi isn't an issue to be concerned about here, which is valuable to know. re: 508 vs 504 spec I've done an oil analysis on my last 508 oil change and blackstone reports all is normal, although I do see the occasional small silver spec in the oil filter at 50000 km. Perhaps will try 504 spec for the next oil change just for ****s and giggles.

Thx much

Your UOAs likely will look identical w/r to wear metal rates between 504 and 508 so keep that in mind.

 

[twX]

What is Ph? Do you mean phosphorus, "P"?

Yes

 

[edyvw]

Your UOAs likely will look identical w/r to wear metal rates between 504 and 508 so keep that in mind.

^This.
The difference is that VW504.00 will be more robust when you are pushing the vehicle. Simply, there is more HTHS "margin."

 

[dbias]

^This.
The difference is that VW504.00 will be more robust when you are pushing the vehicle. Simply, there is more HTHS "margin."

Margin is exactly why I dropped the factory fill at around 700 miles and went with Mobil 1 ESP 0w-30 in the GTI.

 

[DC11]

Why 0w30? Driving around polar circle? 0w30 has more VII than 5w30, more VII means more shearing. It could fall faster out of grade and leave nasty deposits..

 

[kschachn]

Why 0w30? Driving around polar circle? 0w30 has more VII than 5w30, more VII means more shearing. It could fall faster out of grade and leave nasty deposits..

Not always. A better base stock that gives the 0W winter performance and can also require less VM.

Plus it's available at Walmart so it's easier to find and less expensive than the 5W-30.

 

[edyvw]

Why 0w30? Driving around polar circle? 0w30 has more VII than 5w30, more VII means more shearing. It could fall faster out of grade and leave nasty deposits..

All things equal.
For example, Castrol Edge 0W30 has less VII than Edge 5W30 as well as more stable ones.

 

[chris719]

All things equal.
For example, Castrol Edge 0W30 has less VII than Edge 5W30 as well as more stable ones.

Exactly, 5W-30 are often a cheaper formulation except boutiques or maybe M1 ESP.