Oil & Fuel ISO-46 vs ISO-68

/ ISO-46 vs ISO-68 #1  

seanbales

New member
Joined
Feb 20, 2016
Messages
14
Location
Cheyenne, Wyoming
Tractor
2015 LS G3033
I bought an LS G3033 in January. The manual says the transmission takes either ISO-46 or ISO-68.

Two questions:

1. What are the pros and cons of ISO-46 vs ISO-68 hydraulic fluid? Is it just temperature?

2. More importantly, I don't know what's in the transmission do what if I guess wrong when adding? Do I have to replace the transmission oil must to get it right?

Sorry for such beginner questions...
 

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