Originally Posted By: Pablo
Originally Posted By: snowmaker
Originally Posted By: Pablo
Do you honestly understand SAE J306?
Because if you did, you would understand that a gear oil with 20.3cSt@100 deg C is well within the recommended viscosity max of 24cSt. A great viscosity for the application and climate.
I honestly am starting to wonder about the quality of the advice given here sometimes. I guess it's the internet, reader beware.
Have you? I have a copy in front of me.
My point is I would use a 75w-90 and the others are not needed(in most apps). I have yet to see a dealer, Silkolene, Maxima etc push anything outside of 75w-90 or 80-90 for these fluids...Based on another forum Amsoil Tech dept said NOT to use anything higher then 75w-90 in shaft applications. I agree I wonder about advice on the net, sales people etc.
So - what is the viscosity range of the SAE 90 originally recommended, per your chart?BTW I'm not saying 75W-90 won't work, just that 75W-110 will protect better, especially in a warm climate.
Is not the top of 90w =Cst of 24?
The original question centered around severe gear 75w90 being more robust...I say yes stay with the 90W.My disclaimer is : I am not a trained qualified Amsoil master of lubes....just an old trucker