Castrol Drydene Tec_II

[Motorbike]

I was checking out Castrols 5w-30 Elixion Synthetic when I saw this mineral based Drydene Tec_II with some intersting wording such as " will stay in grade , will not thin down " and " special oil soluable friction modifiers " and more on the other page not in the PDF I am posting .
It comes in 5w-20 , 5w-30 , 10w-30 ,10w-40 ,20w-50 and straight grades and all are low phos oils along with the 30wts meeting API SL GF-3 Energy Conserving . It would be pretty cool to have a stay in grade EC 30wt dino that was not a 20wt after 2k miles would it not ? No sludge from those VI Improvers if it really does stay in grade .

Take a look .

http://www.castrolhdl.com/Common/PDS/1099.pdf

 

[Alan]

I have this stuff in 10W30 and 5W30 SL sitting on a shelf at work.We use it in our snowblower.

 

[Motorbike]

Well it appears to be a more shear stable alternative to their GTX and but I wonder what the purpose of this oil is in terms of marketing and or lack of ?