Originally Posted By: Joe90_guy
I always thought the ideal oil for a lot of the temperate world would be a semi-synthetic, Group II/III, VII-free 10W20.
It would combine low Noack, acceptable cold-flow (for most folks), a splash of fuel economy, zero shear, good oxidative stability, acceptable wear and most important of all; low cost.
To get the 'low cost' angle, you need to understand that whilst a typical oil might consist of 90% base oil and 10% DI/Solid VII, additives are roughly 4 - 5 times the cost of base oil, so typically contribute 40% of the cost. Take out all the VII and you take out the one additive that contributes most to piston deposits. Once you do this, you need less ashless dispersant to clean up the mess caused by VII. Reduce ashless and all things being equal, your Noack goes down even further.
Of course such an oil would be anathema to the oil companies and the AddCo's and the OEMs would never support it because they need their 0W16's and their ilk to max out their CAFE credits, but if you think in terms of what would benefit the general public most, it makes a lot of sense...
I didn't know the VIIs, etc were so expensive. Kinda shuts the door on the notion a few have around here that syn 10w-30s with good numbers like NOACK are a result of the cheapest [censored] base oils and then chock full of additives to improve numbers everyone says no one cares about.
Nothing is ever about the general public.
I always thought the ideal oil for a lot of the temperate world would be a semi-synthetic, Group II/III, VII-free 10W20.
It would combine low Noack, acceptable cold-flow (for most folks), a splash of fuel economy, zero shear, good oxidative stability, acceptable wear and most important of all; low cost.
To get the 'low cost' angle, you need to understand that whilst a typical oil might consist of 90% base oil and 10% DI/Solid VII, additives are roughly 4 - 5 times the cost of base oil, so typically contribute 40% of the cost. Take out all the VII and you take out the one additive that contributes most to piston deposits. Once you do this, you need less ashless dispersant to clean up the mess caused by VII. Reduce ashless and all things being equal, your Noack goes down even further.
Of course such an oil would be anathema to the oil companies and the AddCo's and the OEMs would never support it because they need their 0W16's and their ilk to max out their CAFE credits, but if you think in terms of what would benefit the general public most, it makes a lot of sense...
I didn't know the VIIs, etc were so expensive. Kinda shuts the door on the notion a few have around here that syn 10w-30s with good numbers like NOACK are a result of the cheapest [censored] base oils and then chock full of additives to improve numbers everyone says no one cares about.
Nothing is ever about the general public.
