Quote By DR T:
(The 0-40 has a cold cranking numer of 4,301 @ -35°C (-31F) contrasted to the 5-30 which is 10,250 @ -30°C (-22F)...more than twice as thick!)
Now ya gotta get your numbers straight when trying to prove a point,this one is getting you no where
The cP of the 0/40 is 4301 @ -35C
the cP of the 5/30 is 3600 @ -30C
You had one Mini-Rotary Viscometer ( MRV TP-1 " method and another ASTM Method used in that quote,nice try though
BTW,that 10,250 you posted is the 10/30 oil not the 5/30.
Now instead of using these data sheets I propose a guy goes to an Autozone right when they open and before the heater is turned on,pick up a bottle of each oil and shake them. Undeniable evidence the 0/40 is thicker than the 5/30
Better yet,let the fellow who created this topic call Mobil and ask which oil is the better winter oil and post their reply,,DR T,no offense but I beleive you are a thicker is better type pushing your opinions on another guy asking questions,,go ahead and run your thicker oil all year,your opinion have been posted in duplicate
.Matters not to me but for the last time,it is only common sense that says in the same line of oils to use a lower vi oil during winter months,,sure he might could use 0/40 and he also might be using it for very short trips of a mile or so,the 0/40 will NOT warm up as fast as the 5/30 will period during the winter.
Some think these new oils will do it all,they come close but there still are 4 seasons on this Earth,winter is one and usually a thinner VI oil is used when available,in this case it certainly is available,
Now I am outa this thread for good, Fred,once again please call Mobil and ask them which oil during winter for your car,your driving and your coldest cold starts,,,the deal about changing oils for a 1 hour trip or whatever was out of context deluxe BTW
And about the 0 meaning nothing to me? Ask anyone who knows anything about Redlines 10/40 if the 10 means anything to them
[ January 06, 2003, 06:51 PM: Message edited by: dragboat ]