AAA Conventional vs Synthetic Oil Study

[SonofJoe]

Originally Posted By: SR5
Originally Posted By: SonofJoe

Do be aware however that a 5W40 light GTL/heavy PAO oil will very likely contain a sizable slug of VII polymer.

Would a light GTL and heavy Group III be possible ?


Probably not. About the heaviest Group III you can get is something like Yubase 8. This has a KV100 of around 7.5 cst. Blend this with GTL5 (with its KV100 of 5.0 cst) and you're left with a base oil mix that quite away from the KV100 of 12.5 min (more likely 13.5-ish once you take KO30 shear into account) so you would still need that big slug of VII.

 

[merconvvv]

Pennzoil platimum is not supposed to have crude oil in it except 3 percent as an additive carrier ? So it is gtl and group iv/v blend for 30wt and above ?

 

[SonofJoe]

Originally Posted By: merconvvv
Pennzoil platimum is not supposed to have crude oil in it except 3 percent as an additive carrier ? So it is gtl and group iv/v blend for 30wt and above ?


I would say so, yes.

 

[merconvvv]

Thanks sonofjoe.

 

[SR5]

Originally Posted By: merconvvv
Thanks sonofjoe.

Yes Thank You Joe.

 

[merconvvv]

Originally Posted By: SonofJoe
Originally Posted By: merconvvv
Pennzoil platimum is not supposed to have crude oil in it except 3 percent as an additive carrier ? So it is gtl and group iv/v blend for 30wt and above ?


I would say so, yes.


That might explain their low pour points
Qsud 10w30 -51c
Pp 10w30 - 48c

 

[MolaKule]

Originally Posted By: SonofJoe
Oh dear! Yet another group of misguided people that have been seduced by the idea that doing a bunch of tests in the lab actually means something in real life...

...However that's more due to the nutty way ILSAC forces people to formulate oils. If you made sensible oils with sensible viscometrics then the case for using synthetics would be much less compelling.