quote:
What does a "racing" engine oil have to do and for how long?
TBN 3.0 ?
ZDDP 400 PPM?
FMs ??
DDs???
ect???
A true racing oil needs mostly FM and AW adds, and low levels of Detergency/Dispersancy. We have to remember that a racing oil is NOT a daily driver oil, in the strictest sense.
TBN is my view is not important for 1/4 mile to 500 mile races. You're going to drain it anyway after the race and flush the engine with high R&O oil for storage. The important factors for a racing oil are HTHS and viscosity retention.
Here are some typical base AW add levels in use for a 40-50 weight monograde Racing Oil:
MoTDC - 500 - 800 PPM
ZDDP - 1,300 - 2,000 PPM
Borates - 400 PPM
For the DD Package - 10 PPM Magnesium Stuff, 1,000 ppm Calcium Stuff.
The FM's are provided by the base oil, the fatty acid esters one chooses to use, and or a slight amount of VII which will tend to keep the oil around the target weight.
If this new Mobil R is truly a racing oil formulation, why use it in a daily driver?
I suspect it will be a daily driver formulation "DERIVED" from one or more ASPECTS of the racing formulation.
Let's hope this stuff is not just some copy or relabled version of the Mobil "System-S," a GIII - GIV.
http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=11;t=000034#000000
[ November 12, 2003, 12:56 PM: Message edited by: MolaKule ]