PQIA tests nine more 5W-20s, plus a master chart

[Gokhan]

PYB NOACK 6.5%?? That can't be -- there is no way for a Group II 5W-xx. In fact, I get less oil consumption with TGMO 0W-20 than with Pennzoil Conventional 5w20. Also, PQIA viscosity is quite a bit higher than the VOA I had done with Blackstone.

After seeing these results, I don't believe the PQIA tests any more. They are all over the place.

I just checked -- the Shell datasheet is stating the NOACK as 14.7%. This is exactly what you would expect from a Group II GF-5 5W-xx -- slightly less than 15.0%.

 

[DragRace]

Yup,I saw that myself,didnt believe it for a second.

 

[bigt61]

The semi-synthetics in this test don't stand out in any way. What's with that? Do they all have some synthetic in them to meet SN - GF5?

 

[yannis]

Isn't Quaker state owned by Shell ?
Its noack was 7.8% .

 

[Tom NJ]

Originally Posted By: Gokhan
PYB NOACK 6.5%?? That can't be -- there is no way for a Group II 5W-xx. In fact, I get less oil consumption with TGMO 0W-20 than with Pennzoil Conventional 5w20. Also, PQIA viscosity is quite a bit higher than the VOA I had done with Blackstone.

After seeing these results, I don't believe the PQIA tests any more. They are all over the place.

I just checked -- the Shell datasheet is stating the NOACK as 14.7%. This is exactly what you would expect from a Group II GF-5 5W-xx -- slightly less than 15.0%.


The prevailing theory is that Shell (Pennzoil) is sitting on a glut of GTL and using it in some of their conventional oils. Their GTL based oils are coming in with Noacks in the 6-9% range. This may be a temporary situation and data sheets have not been changed.

PQIA uses only independent laboratories certified to ISO quality standards - Blackstone is not certified. All the other PQIA run Noacks in the set came in as expected, except for the Valvoline NextGen, which was rechecked and confirmed. In addition, the CCS viscosities for the Pennzoil and QS samples were also unusually low, confirming the use of high quality base oils.

All PQIA test results are double reviewed by experienced technical professionals, and any outliers are rechecked to assure accuracy before publication. When you name names on a public website, one must exercise great care.

Tom NJ

 

[TrevorS]

Originally Posted By: Tom NJ
When you name names on a public website, one must exercise great care.

Tom NJ


Indeed.

Note that that applies to the website of a professional body, not so much a forum.