Dino 5W-20's collectively are pretty good all being formulated from GPII, GPII+ and even some GPIII base oils.
They're largely shear stable and clean.
0W-20 synthetics can be made without VII's (Red Line and Asmoil to name two) so why even bother making an inherently inferior 5W-20 grade? Technically it doesn't make any sense.
The answer I believe is consumer perception and oil company marketing. 99.9% consumers believe the 0 in a 0W-XX oil means zero viscosity and are reluctant to buy it, consiquently 0W-XX oils don't sell very well despite being superior products..
A good example of that was the recent Red Line-Jay Leno video most of us have seen where RL's Cameron had to correct (educate) Jay on what 0W-XX actually meant (briefly).
The launch of Pennzoil's new Ultra brand is quite frankly disappointing. Only 3 grades are offered, IMO two of which are obsolete; yes 10w30 syn is an obsolete grade as well, without a 0W-XX in the offing.
The 5W-20 has a VI of only 158 which is actually lower than the current PP 5W-20's 160 and clearly inferior to PP's own 0W-20 VI of 175. The 5W-20 VI is not much better than pennzoil's conventional 5W-20 which is 150 (M1 clean 5000 is 156).
If you're in the market for a 20wt oil it's a waste of money to buy a 5W-20 syn when a 0W-20 is available, maybe not on the shelf but available nontheless.
They're largely shear stable and clean.
0W-20 synthetics can be made without VII's (Red Line and Asmoil to name two) so why even bother making an inherently inferior 5W-20 grade? Technically it doesn't make any sense.
The answer I believe is consumer perception and oil company marketing. 99.9% consumers believe the 0 in a 0W-XX oil means zero viscosity and are reluctant to buy it, consiquently 0W-XX oils don't sell very well despite being superior products..
A good example of that was the recent Red Line-Jay Leno video most of us have seen where RL's Cameron had to correct (educate) Jay on what 0W-XX actually meant (briefly).
The launch of Pennzoil's new Ultra brand is quite frankly disappointing. Only 3 grades are offered, IMO two of which are obsolete; yes 10w30 syn is an obsolete grade as well, without a 0W-XX in the offing.
The 5W-20 has a VI of only 158 which is actually lower than the current PP 5W-20's 160 and clearly inferior to PP's own 0W-20 VI of 175. The 5W-20 VI is not much better than pennzoil's conventional 5W-20 which is 150 (M1 clean 5000 is 156).
If you're in the market for a 20wt oil it's a waste of money to buy a 5W-20 syn when a 0W-20 is available, maybe not on the shelf but available nontheless.