CA, you may have mentioned this already, has the Amsoil 10W30 diesel
oil changed gear noise or shifting smoothness?
Thanks
I really don't pay attention to the gear noise.
shifting is like butter and still the same after 4k miles.
when this oil was only rated at 30w it met the wet clutch specs like Caterpillar Powershift Trans. TO-2, TO-3 and Allison C-3 and C-4 . when amsoil expanded the cst to meet 10w30 it lost those spec ratings by like 10cst.
"Amsoil must have reformulated this grade, as they are now advertising it as the 10W-30/SAE 30 instead of just a monograde. The previously listed 100'C was 11.4-11.5, and now they are showing it at 10.9 on the website. I received an email a few days ago from Amsoil that the HT/HS of the oil is 3.4, which is not shown on the website.
No VI improvers so it has to be shear stable, a 10W-30 range (40'C=71 to 100C'=10.9), all the best diesel (CI-4+, et al) & cleaning agents, TBN of 12, and this stuff is cheaper than the other Amsoil PAO-based syns. I'm hopelessly hooked on trying this in my vehicles & lawnmower going forward. I like the concept: someone posted an airplane article a week ago extolling the virtues of monograde oils...which was an interesting read."
http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=478217&page=1
