No but it doesn't seem very shear stable, and combined with fuel dilution I see it dropping well below 3.0 in use. If it was shear stable I would be content with 3.2 cP
It's a RC API SQ oil so it's not going to be as shear stable as a Euro ACEA A3 oil. It behaves similar to Mobil 1. Fuel tends to cause it to dip into 30 grade territory. Amsoil SS back in the day used to have a HT/HS of 3.5 but they lowered it over time to help with FE. Now their 30 grade SS line only has a HT/HS of 3.0-3.1.
It's a RC API SQ oil so it's not going to be as shear stable as a Euro ACEA A3 oil. It behaves similar to Mobil 1. Fuel tends to cause it to dip into 30 grade territory. Amsoil SS back in the day used to have a HT/HS of 3.5 but they lowered it over time to help with FE. Now their 30 grade SS line only has a HT/HS of 3.0-3.1.
Well that would be entirely dependent on the amount and type of VM used in the product. Have we seen reliable tests on here that show actual mechanical shear of the VII? Perhaps there are, I just don't recall seeing it.
Well that would be entirely dependent on the amount and type of VM used in the product. Have we seen reliable tests on here that show actual mechanical shear of the VII? Perhaps there are, I just don't recall seeing it.
Good point. You're right it's not often from mechanical shear. I would guess that it's the type and amount of VM that causes the viscosity to dip. I really think it's more fuel related most of the time vs mechanical shear.
I found it interesting that Eric on YouTube "I do cars" recently tore down an Audi DI 3.0 turbo. The inside of the engine looked pristine, except for the oil control rings. These cars are typically run on ACEA C2 - VW 504/507 approved oils which is why it probably looked so clean inside overall. It's the carbon build-up in the ring land that seems to be the problem which is where VRP does its magic. The challenge for Euro car owners is VRP is not a Euro approved oil at this time.