Originally Posted By: Sonataman
Doesn't 40 grade START at 12.5 cst?
This is oil heavy 30 grade!
Or you could call it a light 40 grade. I am not concerned a bit.
- The viscosity range for an SAE 30 grade oil is 9.3cSt – 12.5cSt. The viscosity range for an SAE 40 grade oil is 12.5cSt – 16.3cSt.
Good point on the JASO comment. This is a new oil, so I have inquired with the distributor for answers.
Here are a couple of answers that I have already recieved from the company.
TBN seeming a bit low?
"- The more important point is TBN retention over time, which indicates the oils ability to scavenge corrosive acids produced during engine use and overall robustness. An Oil with higher TBN values does not necessarily mean that the drain interval will be longer."
Percentage of PAO? (I didn't expect them to give us percentages, as no manufacturer will offer the recipe to their secret sauce.
" We are not saying that the product is formulated with 100% PAO, We use the necessary amount in our formulations in conjunction with specialized additives to give our products superior oxidation, wear, rust and deposit control."