Motul Gear 300 & HPL Differential Life 75W-90 VOA comparison!

[SubieRubyRoo]

The Spicer product actually extends the axle warrantee on big rigs:

I found the PDF https://www.oil-club.ru/forum/applications/core/interface/file/attachment.php?id=82109 which has a few points
Properties Unit Typical Value Method
SAE class 75W-90 SAE J 306
Density at 15.6 °C lbs/gal 0.864 (7.21) ASTM D 1298
Viscosity index – 169 ASTM D 2270
at 100˚ C mm2/s 15.2 ASTM D 445
at 40˚ C mm2/s 95.4 ASTM D 445
at -40˚ C mPas 45, 100 ASTM D 2983
Flash Point °C 210 ASTM D 92
Pour Point °C -57 ASTM D 97

Isn’t it kind of odd though that they only extend the warranty for linehaul (essentially highway-only) applications, and only for semis, and only when used on their differential carriers/gearsets?

Did oilclub.ru happen to do HTHS testing? That would be most revealing.

 

[Ray S]

I read the TRAXON pdf
https://www.petrochem.dk/wp-content/uploads/2020/04/PCL-Lubricant-handbook_Brochure.pdf
which maybe hints at how

TRAXON™ Synthetic 75W-85 offers equipment the same remarkable performance as TRAXON Synthetic 75W-90 with gains in efficiency due to a reduced viscous drag at elevated temperatures. ... Since early 2015, TRAXON E Synthetic 75W-90 has demonstrated up to1.5%* fuel efficiency benefits over the previous formulation

I would also assume that Spicer does not make their own oils.

 

[Ray S]

Isn’t it kind of odd though that they only extend the warranty for linehaul (essentially highway-only) applications, and only for semis, and only when used on their differential carriers/gearsets?

although it is their main product line I'd guess, vs pickups which are considered disposable anyway

Did oilclub.ru happen to do HTHS testing? That would be most revealing.

No idea, it was the only place I found the PDF since the Spicer website link is broken

I did search at https://www.oil-club.ru/forum with no further results. A lot of Spicer Premium Synthetic Grease discussion.

 

[mkiv808]

Not many good options for MT subie owners (and a few porche owners, iirc.) Thanks for the post @SubieRubyRoo
I would consider these two to be the only two that are sure to be formulated with appropriate FM for synchronized transmissions and to have a GL-5 rating for the hypoid differential.

What about Ravenol VST?