Why are so many bottlers ignoring SAE J 306?

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It's now been out 4 years!!

Quote:
Two new viscosity grades were added to the viscosity classification as part of the January 2005 update.
The new grades are SAE 110 (100 °C viscosity between 18.5 and 24.0 cSt) and SAE 190 (100 °C
viscosity between 32.5 and 41.0 cST). The need for the two additional grades centered on the wide
variation in kinematic viscosity possible within the prior version of J306 for SAE 90 and the SAE 140
grades. The effect of such a wide range of kinematic viscosities could result in an axle being serviced
with a lubricant that had a viscosity significantly lower or higher than the axle lubricant that the axle had
been validated with, even though the same viscosity grade had been employed. OEMs may have been
forced to specify a higher viscosity grade than what they may actually desire, because the wide range of
kinematic viscosities of the next lower grade could result in customers using a lubricant having too low of
a kinematic viscosity. For example: An OEM would like to recommend a lubricant having a 100 °C
viscosity of 19.5 cSt, which according to the prior version of J306 requirements would be SAE 90.
However, if the OEM had recommended a SAE 90 the actual viscosity could be as low as 13.5 cSt, which
may be lower than the OEM is comfortable with. Thus, the OEM recommended a SAE 140, which
ensures that the 100 °C viscosity is never lower than the desired 19.5. Unfortunately, that also means
that the viscosity could be as high as 41.0 cSt. Under the new limits the OEM could recommend a SAE
110 which would meet the 19.5 cSt requirement and the axle would not be serviced with anything higher
in viscosity than 31 cSt.
An additional change to J306 was the inclusion for the use of ASTM D 3244 for resolving any disputes
between laboratories as to whether a product conforms with any specification in Table 1.


Quote:
3. Significance and Use
This SAE Standard is intended for use by equipment manufacturers in defining and recommending
automotive gear, axle and manual transmission lubricants, for oil marketers in labeling such lubricants
with respect to their viscosity, and for users in following their owner's manual recommendations. The SAE
viscosity grades shown in Table 1 constitute a classification for automotive gear, axle, and manual
transmission lubricants in rheological terms only. Disputes between laboratories as to whether a product
conforms with any specification in Table 1 shall be resolved by application of the procedures described in
ASTM D 3244. For this purpose, all specifications in Table 1 are critical specifications to which
conformance based upon reproducibility of the prescribed test method is required. The product shall be
considered to be in conformance if the Assigned Test Value (ATV) is within the specification.
 
Well, if the manufacturers are ignoring it and not specifying it, why would the aftermarket bottlers do any different?
 
I know of at least one car manufacturer that is ignoring it as well.
And you know what I mean.. INDYMAC
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A SAE 90 GL-5 oil, recommended in 1999, would most likely not the be the same today.

Solution: add a "1"
Amsoil SG SAE 190
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